Publications

Year 2017

From Joysticks to Pokémon Go: Games and Play Research in SIGCHI

@inproceedings{Nacke2017c,
address = {Denver, CO, USA},
author = {Nacke, Lennart E and Toups, Zachary O and Johnson, Daniel},
booktitle = {Proceeding of the 2017 ACM Conference on Human Factors in Computing Systems - CHI 2017},
doi = {10.1145/3027063.3049284},
file = {:C$\backslash$:/Users/Gustavo/Desktop/hcigames/publications/From-Joysticks-to-Pokemon-Go.pdf:pdf},
isbn = {9781450346566},
pages = {1330--1333},
publisher = {ACM},
title = {{From Joysticks to Pok{\'{e}}mon Go : Games and Play Research in SIGCHI}},
year = {2017}
}

At CHI 2016, a record number of games-related papers were accepted into the conference proceedings and the SIG meeting for games attracted almost 100 people. The games and play subcommittee remained strong at CHI 2017 and showed a variety of submissions. In addition, we see games practitioners within the SIGCHI community running workshops and taking part in the CHI conference. This SIG will continue to be an important forum for everyone doing games research at CHI. We want to engage the community in a discussion about the directions that games research at CHI should take and gather feedback about current HCI research trends for games. To expand this community, we plan to discuss current HCI and games trends, academic dissemination, community outreach, and collaborations with practitioners.

Testing Incremental Difficulty Design in Platformer Games

@inproceedings{Wehbe2017,
abstract = {Designing difficulty levels in platformer games is a challenge for game designers. It is important because design decisions that affect difficulty also directly affect player experience. Consequently, design strategies for balancing game difficulty are discussed by both academics and game designers. In this paper, we study how manipulating the following design decisions, commonly found in platformers, moderates difficulty: Scroll Speed, Target Size, Jump Task Complexity, and Perspective. Results for Scroll Speed and Target Size indicate that errors increase as speed increases and platform size decreases. However, results for jump task complexity demonstrate a separation of errors from task complexity. Specifically, while double-jump tasks are harder than single-jump tasks, triple-jump tasks appear to be as difficult as double-jump tasks. Additionally, the study demonstrates how changes in perspective affect the errors made by players in gameplay. The study results are applicable both to automatic level generation and dynamic difficulty adjustment in platformer games.},
address = {Denver, CO, USA},
author = {Wehbe, Rina R and Mekler, Elisa D and Schaekermann, Mike and Lank, Edward and Nacke, Lennart E},
booktitle = {Proceeding of the 2017 ACM Conference on Human Factors in Computing Systems},
doi = {http://dx.doi.org/10.1145/3025453.3025697},
pages = {5109--5113},
publisher = {ACM},
title = {{Testing Incremental Difficulty Design in Platformer Games}},
year = {2017}
}

Designing difficulty levels in platformer games is a challenge for game designers. It is important because design decisions that affect difficulty also directly affect player experience. Consequently, design strategies for balancing game difficulty are discussed by both academics and game designers. In this paper, we study how manipulating the following design decisions, commonly found in platformers, moderates difficulty: Scroll Speed, Target Size, Jump Task Complexity, and Perspective. Results for Scroll Speed and Target Size indicate that errors increase as speed increases and platform size decreases. However, results for jump task complexity demonstrate a separation of errors from task complexity. Specifically, while double-jump tasks are harder than single-jump tasks, triple-jump tasks appear to be as difficult as double-jump tasks. Additionally, the study demonstrates how changes in perspective affect the errors made by players in gameplay. The study results are applicable both to automatic level generation and dynamic difficulty adjustment in platformer games.

Applying Gameful Design Heuristics

@inproceedings{Tondello2017,
abstract = {To evaluate gameful apps and games, we have recently developed a new set of guidelines for heuristic evaluation of gameful design in interactive systems, supporting the quickly growing gamification research area. Our set of 28 gamification heuristics allows rapid evaluation of a gameful system. This course will supply attendees with our gameful design heuristics and train them in using the heuristics on an example application (Duolingo). The course is structured into two 80-minute units, which will give the participants enough time to learn the new heuristics and apply them to the gamified application. Finally, at the end of the second unit, we will be discussing how to generate design ideas with the heuristics. The course instructors, Gustavo Tondello and Lennart Nacke, have both developed the gameful design heuristics and have experience in designing and evaluating gamified applications and teaching courses.},
address = {Denver, CO, USA},
author = {Tondello, Gustavo F and Nacke, Lennart E},
booktitle = {Proceeding of the 2017 ACM Conference on Human Factors in Computing Systems},
doi = {10.1145/3027063.3027116},
file = {:C$\backslash$:/Users/Gustavo/Dropbox/PhD/My Publications/2017-Applying Gameful Design Heuristics.pdf:pdf},
isbn = {9781450346566},
keywords = {Gameful Design,Gamification,Heuristics},
publisher = {ACM},
title = {{Applying Gameful Design Heuristics}},
year = {2017}
}

To evaluate gameful apps and games, we have recently developed a new set of guidelines for heuristic evaluation of gameful design in interactive systems, supporting the quickly growing gamification research area. Our set of 28 gamification heuristics allows rapid evaluation of a gameful system. This course will supply attendees with our gameful design heuristics and train them in using the heuristics on an example application (Duolingo). The course is structured into two 80-minute units, which will give the participants enough time to learn the new heuristics and apply them to the gamified application. Finally, at the end of the second unit, we will be discussing how to generate design ideas with the heuristics. The course instructors, Gustavo Tondello and Lennart Nacke, have both developed the gameful design heuristics and have experience in designing and evaluating gamified applications and teaching courses.

How to Write and Review CHI Papers

@inproceedings{Nacke2017b,
abstract = {Everything that we do as researchers is based on what we write. Especially for graduate students and young researchers, it is hard to turn a research project into a successful CHI publication. This struggle continues for postdocs and young professors trying to provide excellent reviews for the CHI community that pinpoint flaws and improvements in research papers. This course provides hands-on advice on how to write papers with clarity, substance, and style and how to structure reviews that are helpful and focused on enhancing someone's research. It is structured into two 80-minute units with a focus on writing and reviewing respectively.},
address = {Denver, CO, USA},
author = {Nacke, Lennart E},
booktitle = {Proceeding of the 2017 ACM Conference on Human Factors in Computing Systems},
doi = {10.1145/3027063.3027097},
isbn = {9781450346566},
publisher = {ACM},
title = {{How to Write and Review CHI Papers}},
year = {2017}
}

Everything that we do as researchers is based on what we write. Especially for graduate students and young researchers, it is hard to turn a research project into a successful CHI publication. This struggle continues for postdocs and young professors trying to provide excellent reviews for the CHI community that pinpoint flaws and improvements in research papers. This course provides hands-on advice on how to write papers with clarity, substance, and style and how to structure reviews that are helpful and focused on enhancing someone’s research. It is structured into two 80-minute units with a focus on writing and reviewing respectively.

The maturing of gamification research

@article{Nacke2017,
author = {Nacke, Lennart E. and Deterding, Sebastian},
doi = {10.1016/j.chb.2016.11.062},
journal = {Computers in Human Behavior},
title = {{The maturing of gamification research}},
year = {2017}
}

Towards Personality-driven Persuasive Health Games and Gamified Systems

@inproceedings{Orji2017,
abstract = {Persuasive games and gamified systems are effective tools for motivating behavior change using various persuasive strategies. Research has shown that tailoring these systems can increase their efficacy. However, there is little knowledge on how game-based persuasive systems can be tailored to individuals of various personality traits. To advance research in this area, we conducted a large-scale study of 660 participants to investigate how different personalities respond to various persuasive strategies that are used in persuasive health games and gamified systems. Our results reveal that people's personality traits play a significant role in the perceived persuasiveness of different strategies. Conscientious people tend to be motivated by goal setting, simulation, self-monitoring and feedback; people who are more open to experience are more likely to be demotivated by rewards, competition, comparison, and cooperation. We contribute to the CHI community by offering design guidelines for tailoring persuasive games and gamified designs to a particular group of personalities.},
author = {Orji, Rita and Nacke, Lennart E. and DiMarco, Chrysanne},
booktitle = {Proceedings of the SIGCHI Conference on Human Factors in Computing Systems},
doi = {10.1145/3025453.3025577},
isbn = {9781450346559},
publisher = {ACM},
title = {{Towards Personality-driven Persuasive Health Games and Gamified Systems}},
year = {2017}
}

Persuasive games and gamified systems are effective tools for motivating behavior change using various persuasive strategies. Research has shown that tailoring these systems can increase their efficacy. However, there is little knowledge on how game-based persuasive systems can be tailored to individuals of various personality traits. To advance research in this area, we conducted a large-scale study of 660 participants to investigate how different personalities respond to various persuasive strategies that are used in persuasive health games and gamified systems. Our results reveal that people’s personality traits play a significant role in the perceived persuasiveness of different strategies. Conscientious people tend to be motivated by goal setting, simulation, self-monitoring and feedback; people who are more open to experience are more likely to be demotivated by rewards, competition, comparison, and cooperation. We contribute to the CHI community by offering design guidelines for tailoring persuasive games and gamified designs to a particular group of personalities.

Year 2016

“The Collecting Itself Feels Good”: Towards Collection Interfaces for Digital Game Objects

@inproceedings{Toups2016,
Abstract = {Digital games offer a variety of collectible objects. We investigate players' collecting behaviors in digital games to determine what digital game objects players enjoyed collecting and why they valued these objects. Using this information, we seek to inform the design of future digital game object collection interfaces. We discuss the types of objects that players prefer, the reasons that players value digital game objects, and how collection behaviors may guide play. Through our findings, we identify design implications for digital game object collection interfaces: enable object curation, preserve rules and mechanics, preserve context of play, and allow players to share their collections with others. Digital game object collection interfaces are applicable to the design of digital games, gamified applications, and educational software.},
Address = {Austin, TX, USA},
Author = {Z. O. Toups, N. K. Crenshaw, R. R. Wehbe, G. F. Tondello, and L. E. Nacke},
Booktitle = {Proceedings of the 2016 annual symposium on computer-human interaction in play - chi play '16},
Doi = {10.1145/2967934.2968088},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2016/08/dgo.jpg},
Keywords = {Digital game objects,collecting behaviors},
Publisher = {ACM},
Title = {“The Collecting Itself Feels Good”: Towards Collection Interfaces for Digital Game Objects},
Url = {https://hcigames.com/download/the-collecting-itself-feels-good},
Year = {2016},

Digital games offer a variety of collectible objects. We investigate players' collecting behaviors in digital games to determine what digital game objects players enjoyed collecting and why they valued these objects. Using this information, we seek to inform the design of future digital game object collection interfaces. We discuss the types of objects that players prefer, the reasons that players value digital game objects, and how collection behaviors may guide play. Through our findings, we identify design implications for digital game object collection interfaces: enable object curation, preserve rules and mechanics, preserve context of play, and allow players to share their collections with others. Digital game object collection interfaces are applicable to the design of digital games, gamified applications, and educational software.

ABOVE WATER: An Educational Game for Anxiety

@inproceedings{Wehbe2016,
Abstract = {We present Above Water - a digital/physical hybrid game to inform people about the available strategies to cope with two types of Anxiety Disorders - Generalized Anxiety Disorder and Panic Disorder. The game teaches players about existing treatments. This hybrid game is designed to inspire players to share their experiences and develop their own personal narrative. The document also outlines an assessment strategy to study the game and determine its effectiveness as a game for health. The game is designed to educate non-institutionalized individuals with clinical anxiety and panic disorder. Potential players may be diagnosed, seeking intervention information, or a supportive friend.},
Address = {Austin, TX, USA},
Author = {R. R. Wehbe, D. K. Watson, G. F. Tondello, M. Ganaba, M. Stocco, A. Lee, and L. E. Nacke},
Booktitle = {Proceedings of the 2016 annual symposium on computer-human interaction in play extended abstracts - chi play ea '16},
Doi = {10.1145/2968120.2971804},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2016/08/anxiety.jpg},
Keywords = {Game for Health, Psychology, Mental Health},
Publisher = {ACM},
Title = {ABOVE WATER: An Educational Game for Anxiety},
Url = {https://hcigames.com/download/above-water-educational-game-anxiety},
Year = {2016},

We present Above Water - a digital/physical hybrid game to inform people about the available strategies to cope with two types of Anxiety Disorders - Generalized Anxiety Disorder and Panic Disorder. The game teaches players about existing treatments. This hybrid game is designed to inspire players to share their experiences and develop their own personal narrative. The document also outlines an assessment strategy to study the game and determine its effectiveness as a game for health. The game is designed to educate non-institutionalized individuals with clinical anxiety and panic disorder. Potential players may be diagnosed, seeking intervention information, or a supportive friend.

ABOVE WATER: Extending the Play Space for Health

@inproceedings{Wehbe2016a,
Abstract = {ABOVE WATER is a game that disseminates information about Clinical Anxiety Disorders, particularly Generalized Anxiety Disorder and Panic Disorder. This game focuses on teaching players about treatments as well as providing a safe space for discussion of personal experiences. This game focuses on using the physical world (physical space, physical and tangible cards) and the digital world (accessible by any phone or tablet with a modern web browser) as part of its gameplay.},
Address = {Niagara Falls, ON, Canada},
Author = {R. R. Wehbe, D. K. Watson, G. F. Tondello, and L. E. Nacke},
Booktitle = {Proceedings of the 2016 international conference on interactive surfaces and spaces - iss '16},
Doi = {10.1145/2992154.2996882},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2016/08/anxiety.jpg},
Keywords = {Games for Health, Mobile Games, Psychology},
Publisher = {ACM},
Title = {ABOVE WATER: Extending the Play Space for Health},
Url = {https://hcigames.com/download/above-water-extending-play-space-for-health},
Year = {2016},

ABOVE WATER is a game that disseminates information about Clinical Anxiety Disorders, particularly Generalized Anxiety Disorder and Panic Disorder. This game focuses on teaching players about treatments as well as providing a safe space for discussion of personal experiences. This game focuses on using the physical world (physical space, physical and tangible cards) and the digital world (accessible by any phone or tablet with a modern web browser) as part of its gameplay.

CHI PLAYGUE: A Mobile Conference Networking Game

@inproceedings{Tondello2016b,
Abstract = {Modern professional networking relies on social media. To take advantage of this fact, we present CHI PLAYGUE, a conference game designed to facilitate interaction among strangers and encourage social networking to create a community. The game integrates digital technology (mobile devices and large displays) within the space of the conference venue, combined with a mixed-reality narrative and people’s social interactions to facilitate the emergence of social dynamics. By providing a platform for large-scale, playful interaction, the game creates an experience that fosters the development of mutually beneficial, personal, and professional relationships among players.},
Address = {Niagara Falls, ON, Canada},
Author = {G. F. Tondello, R. R. Wehbe, and L. E. Nacke},
Booktitle = {Proceedings of the 2016 international conference on interactive surfaces and spaces - iss '16},
Doi = {10.1145/2992154.2996870},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2015/08/CHI-PLAYGUE-A-Networking-Game-of-Emergent-Sociality1.jpg},
Keywords = {Social networking game, mobile game, mixed-reality game, social game, gamification},
Publisher = {ACM},
Title = {CHI PLAYGUE: A Mobile Conference Networking Game},
Url = {https://hcigames.com/download/chi-playgue-a-mobile-conference-networking-game},
Year = {2016},@inproceedings{Tondello2016b,

Modern professional networking relies on social media. To take advantage of this fact, we present CHI PLAYGUE, a conference game designed to facilitate interaction among strangers and encourage social networking to create a community. The game integrates digital technology (mobile devices and large displays) within the space of the conference venue, combined with a mixed-reality narrative and people’s social interactions to facilitate the emergence of social dynamics. By providing a platform for large-scale, playful interaction, the game creates an experience that fosters the development of mutually beneficial, personal, and professional relationships among players.

CLEVER: A Trivia and Strategy Game for Enterprise Knowledge Learning

@inproceedings{Elm2016a,
Abstract = {Knowledge management (KM) includes the acquisition, sharing, and dissemination of knowledge within a company. The problem with many enterprise KM systems is that they are complex and hardly used, because workers lack motivation to engage in a collaborative process of knowledge sharing and learning. To address this, we developed a gameful learning component of an enterprise KM system (KMS). Our game features an innovative combination of trivia and strategy elements, put together to afford motivation within a KMS. It can be played by employees in the same organization to foster collaborative knowledge exchange and learning.},
Address = {Austin, TX, USA},
Author = {D. Elm, G. F. Tondello, D. L. Kappen, M. Ganaba, M. Stocco, and L. E. Nacke},
Booktitle = {Proceedings of the 2016 annual symposium on computer-human interaction in play extended abstracts - chi play ea '16},
Doi = {10.1145/2968120.2987745},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2016/08/clever.jpg},
Keywords = {Gamification, knowledge management, gameful design.},
Publisher = {ACM},
Title = {CLEVER: A Trivia and Strategy Game for Enterprise Knowledge Learning},
Url = {https://hcigames.com/download/clever-trivia-strategy-game-enterprise-knowledge-learning},
Year = {2016},

Knowledge management (KM) includes the acquisition, sharing, and dissemination of knowledge within a company. The problem with many enterprise KM systems is that they are complex and hardly used, because workers lack motivation to engage in a collaborative process of knowledge sharing and learning. To address this, we developed a gameful learning component of an enterprise KM system (KMS). Our game features an innovative combination of trivia and strategy elements, put together to afford motivation within a KMS. It can be played by employees in the same organization to foster collaborative knowledge exchange and learning.

CLEVER: Gamification and Enterprise Knowledge Learning

@inproceedings{Elm2016,
Abstract = {This paper describes the design and a preliminary implementation study of a gamified knowledge management system (KMS) that supports the learning component within knowledge management (KM). KM includes acquiring social capital through the process of acquisition, sharing, and dissemination of knowledge within a company. Employees often lack the motivation to share their implicit knowledge with one another and are reluctant to engage in a collaborative forum for such knowledge exchange. We developed a gamified learning component of an enterprise KMS to help foster this process of collaborative and participatory learning. More importantly, this game combines trivia and strategy elements as game elements to motivate the players for knowledge exchange. We report preliminary results from an exploratory study with nine participants which indicates that the above combination of game elements does contribute to participatory knowledge learning within an enterprise KMS.},
Address = {Austin, TX, USA},
Author = {D. Elm, D. L. Kappen, G. F. Tondello, and L. E. Nacke},
Booktitle = {Proceedings of the 2016 annual symposium on computer-human interaction in play extended abstracts - chi play ea '16},
Doi = {10.1145/2968120.2987745},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2016/08/clever.jpg},
Keywords = {Gamification, knowledge management, gameful design.},
Publisher = {ACM},
Title = {CLEVER: Gamification and Enterprise Knowledge Learning},
Url = {https://hcigames.com/download/clever-gamification-enterprise-knowledge-learning},
Year = {2016},

This paper describes the design and a preliminary implementation study of a gamified knowledge management system (KMS) that supports the learning component within knowledge management (KM). KM includes acquiring social capital through the process of acquisition, sharing, and dissemination of knowledge within a company. Employees often lack the motivation to share their implicit knowledge with one another and are reluctant to engage in a collaborative forum for such knowledge exchange. We developed a gamified learning component of an enterprise KMS to help foster this process of collaborative and participatory learning. More importantly, this game combines trivia and strategy elements as game elements to motivate the players for knowledge exchange. We report preliminary results from an exploratory study with nine participants which indicates that the above combination of game elements does contribute to participatory knowledge learning within an enterprise KMS.

Design Strategies for Gamified Physical Activity Applications for Older Adults

@inproceedings{Kappen2016,
abstract = {Staying physically active is essential to wellbeing in late life. However, many older adults experience barriers to physical activity. Past research has investigated the development of playful interactive systems to support exercise routines and reduce access barriers. Yet, little research has been done on older adults' needs and preferences regarding technologies that support physical activity. We address this issue through an exploration of older adults' exercise motivations grouped around themes relevant to technology design. We conducted semi-structured interviews with 19 older adults, and followed up with a focus group study of physical trainers and older adults with an active lifestyle. Based on our results, we discuss their conflicting perspectives and challenges on exercise and technology, which leads us to contribute design strategies to support designers as well as researchers wishing to create meaningful and playful fitness applications for older adults.},
author = {Kappen, Dennis L. and Nacke, Lennart E. and Gerling, Kathrin M. and Tsotsos, Lia E.},
booktitle = {Proceedings of the Annual Hawaii International Conference on System Sciences-49},
doi = {10.1109/HICSS.2016.166},
file = {:C$\backslash$:/Users/Gustavo/Dropbox/PhD/HCI Games Publications/2016/Design Strategies for Gamified Physical Activity Applications for Older Adults.pdf:pdf},
mendeley-groups = {HCI Games Group Publications},
pages = {1309--1318},
title = {{Design Strategies for Gamified Physical Activity Applications for Older Adults}},
year = {2016}
}

Staying physically active is essential to wellbeing in late life. However, many older adults experience barriers to physical activity. Past research has investigated the development of playful interactive systems to support exercise routines and reduce access barriers. Yet, little research has been done on older adults’ needs and preferences regarding technologies that support physical activity. We address this issue through an exploration of older adults’ exercise motivations grouped around themes relevant to technology design. We conducted semi-structured interviews with 19 older adults, and followed up with a focus group study of physical trainers and older adults with an active lifestyle. Based on our results, we discuss their conflicting perspectives and challenges on exercise and technology, which leads us to contribute design strategies to support designers as well as researchers wishing to create meaningful and playful fitness applications for older adults.

Games User Research (GUR) for Indie Studios

@inproceedings{Moosajee2016,
Abstract = {Playtesting sessions are becoming more integrated in game development cycles. However, playtests are not always feasible or a
ordable for smaller independent game studios, as they require specialized equipment and expertise. Given the recent growth and prevalence of independent developers, there is a need to adapt playtesting processes for indie studios to assist in creating an optimal player experience. Therefore, our research focuses on challenges and opportunities of integrating games user research in the development cycles of independent studios. We worked with three studios conducting playtests on their upcoming titles. In line with the CHI2016 #chi4good spirit this paper contributes to the important topic of adopting user research methods for indie and small game studios. We believe that the games user research (GUR) field must advance towards demographics that will benefit from GUR but are under-represented in the community and this paper is one of the first that will contribute to this.},
Address = {San Jose, CA},
Author = {N. Moosajee and P. Mirza-Babaei},
Booktitle = {Proceedings of chi 2016 extended abstracts},
Doi = {10.1145/2851581.2892408},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2016/03/gur_indies.jpg},
Keywords = {Games User Research,Playtest,Indie Development,Persona,Rapid Prototyping,Telemetry},
Title = {Games User Research (GUR) for Indie Studios},
Url = {https://hcigames.com/download/games-user-research-for-indie-studios},
Year = {2016},

Playtesting sessions are becoming more integrated in game development cycles. However, playtests are not always feasible or a ordable for smaller independent game studios, as they require specialized equipment and expertise. Given the recent growth and prevalence of independent developers, there is a need to adapt playtesting processes for indie studios to assist in creating an optimal player experience. Therefore, our research focuses on challenges and opportunities of integrating games user research in the development cycles of independent studios. We worked with three studios conducting playtests on their upcoming titles. In line with the CHI2016 #chi4good spirit this paper contributes to the important topic of adopting user research methods for indie and small game studios. We believe that the games user research (GUR) field must advance towards demographics that will benefit from GUR but are under-represented in the community and this paper is one of the first that will contribute to this.

Heuristic Evaluation for Gameful Design

@inproceedings{Tondello2016a,
Abstract = {Despite the emergence of many gameful design methods in the literature, there is a lack of evaluation methods specific to gameful design. To address this gap, we present a new set of guidelines for heuristic evaluation of gameful design in interactive systems. First, we review several gameful design methods to identify the dimensions of motivational affordances most often employed. Then, we present a set of 28 gamification heuristics aimed at enabling experts to rapidly evaluate a gameful system. The resulting heuristics are a new method to evaluate user experience in gameful interactive systems.},
Address = {Austin, TX, USA},
Author = {G. F. Tondello, D. L. Kappen, E. D. Mekler, M. Ganaba, and L. E. Nacke},
Booktitle = {Proceedings of the 2016 annual symposium on computer-human interaction in play extended abstracts - chi play ea '16},
Doi = {10.1145/2968120.2987729},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2016/08/ratings.png},
Keywords = {Heuristic Evaluation, Gamification, Gameful Design},
Publisher = {ACM},
Title = {Heuristic Evaluation for Gameful Design},
Url = {https://hcigames.com/download/heuristic-evaluation-for-gameful-design},
Year = {2016},

Despite the emergence of many gameful design methods in the literature, there is a lack of evaluation methods specific to gameful design. To address this gap, we present a new set of guidelines for heuristic evaluation of gameful design in interactive systems. First, we review several gameful design methods to identify the dimensions of motivational affordances most often employed. Then, we present a set of 28 gamification heuristics aimed at enabling experts to rapidly evaluate a gameful system. The resulting heuristics are a new method to evaluate user experience in gameful interactive systems.

Investigating the Impact of Cooperative Communication Mechanics on Player Performance in Portal 2

@inproceedings{Vaddi2016,
Abstract = {Cooperative communication mechanics, such as avatar gestures or in-game visual pointers, enable player collaboration directly through gameplay. We currently lack a deeper understanding of how players use cooperative communication mechanics, and whether they can effectively supplement or even supplant traditional voice and chat communication. The present research investigated player communication in Portal 2 by testing the game’s native cooperative communication mechanics for dyads of players in custom test chambers. Following our initial hypothesis, players functioned best when they had access to both cooperative communication mechanics and voice. We found that players preferred voice communication, but perceived cooperative communication mechanics as necessary to coordinate interdependent actions.},
Address = {Victoria, BC, Canada},
Author = {D. Vaddi, Z. O. Toups, I. Dolgov, R. R. Wehbe, and L. E. Nacke},
Booktitle = {Proceedings of graphics interfaces 2016},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2015/08/Validating-Test-Chambers-to-Study-Cooperative-Communication-Mechanics-in-Portal-2e.jpg},
Keywords = {Game analysis,communication,cooperation,experimentation},
Publisher = {ACM},
Title = {Investigating the Impact of Cooperative Communication Mechanics on Player Performance in Portal 2},
Url = {https://hcigames.com/download/investigating-impact-cooperative-communication-mechanics-player-performance-portal-2},
Year = {2016},

Cooperative communication mechanics, such as avatar gestures or in-game visual pointers, enable player collaboration directly through gameplay. We currently lack a deeper understanding of how players use cooperative communication mechanics, and whether they can effectively supplement or even supplant traditional voice and chat communication. The present research investigated player communication in Portal 2 by testing the game’s native cooperative communication mechanics for dyads of players in custom test chambers. Following our initial hypothesis, players functioned best when they had access to both cooperative communication mechanics and voice. We found that players preferred voice communication, but perceived cooperative communication mechanics as necessary to coordinate interdependent actions.

Lightweight Games User Research for Indies and Non-Profit Organizations

@inproceedings{Nacke2016,
Abstract = {The Games User Research (GUR) community has thrived at CHI with four workshops and a course since CHI 2012; all of these were well attended. In line with the #chi4good spirit this year, the GUR field must advance towards demographics that will benefit from GUR but are currently underrepresented in the community: Small, independent developers, non-profit organizations, and academics that create mobile games, games for health or change, or educational games. This workshop will be a think tank for participants to construct collective knowledge, share and discuss. We plan to discuss topics online beyond the workshop via the International Game Developer Associations Special Interest Group on GUR, which serves as a basis for disseminating workshop outcomes and further discussion.},
Address = {San Jose, CA, USA},
Author = {L. E. Nacke, C. Moser, A. Drachen, P. Mirza-Babaei, A. Abney, and Z. (. Zhenyu},
Booktitle = {Proceedings of the 34th annual acm conference on human factors in computing systems, extended abstracts},
Doi = {10.1145/2851581.2856504},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2015/05/Introducing-the-Biometric-Storyboards-Tool-for-Games-User-Research.png},
Isbn = {9781450340823},
Keywords = {Games User Research, Games 4 Health, Games for Change, User Experience, Usability, Playability, Games Research},
Publisher = {ACM},
Title = {Lightweight Games User Research for Indies and Non-Profit Organizations},
Url = {https://hcigames.com/download/lightweight-games-user-research-for-indies-and-non-profit-organizations},
Year = {2016},

The Games User Research (GUR) community has thrived at CHI with four workshops and a course since CHI 2012; all of these were well attended. In line with the #chi4good spirit this year, the GUR field must advance towards demographics that will benefit from GUR but are currently underrepresented in the community: Small, independent developers, non-profit organizations, and academics that create mobile games, games for health or change, or educational games. This workshop will be a think tank for participants to construct collective knowledge, share and discuss. We plan to discuss topics online beyond the workshop via the International Game Developer Associations Special Interest Group on GUR, which serves as a basis for disseminating workshop outcomes and further discussion.

The Gamification User Types Hexad Scale

@inproceedings{Tondello2016,
abstract = {Several studies have indicated the need for personalizing gamified systems to users' personalities. However, mapping user personality onto design elements is difficult. Hexad is a gamification user types model that attempts this mapping but lacks a standard procedure to assess user preferences. Therefore, we created a 24-items survey response scale to score users' preferences towards the six different motivations in the Hexad framework. We used internal and test-retest reliability analysis, as well as factor analysis, to validate this new scale. Further analysis revealed significant associations of the Hexad user types with the Big Five personality traits. In addition, a correlation analysis confirmed the framework's validity as a measure of user preference towards different game design elements. This scale instrument contributes to games user research because it enables accurate measures of user preference in gamification.},
address = {Austin, TX, USA},
author = {Tondello, Gustavo F. and Wehbe, Rina R. and Diamond, Lisa and Busch, Marc and Marczewski, Andrzej and Nacke, Lennart E.},
booktitle = {Proceedings of the 2016 Annual Symposium on Computer-Human Interaction in Play - CHI PLAY '16},
doi = {10.1145/2967934.2968082},
file = {:C$\backslash$:/Users/Gustavo/Google Drive/HCI Games Group Documents/Projects and Papers/Gamification player types/Hexad Validation Paper/The Gamification User Types Hexad Scale-Camera Ready.pdf:pdf},
keywords = {Gameful Design,Gamification,Hexad,User Types},
mendeley-groups = {HCI Games Group Publications},
publisher = {ACM},
title = {{The Gamification User Types Hexad Scale}},
year = {2016}
}

Several studies have indicated the need for personalizing gamified systems to users' personalities. However, mapping user personality onto design elements is difficult. Hexad is a gamification user types model that attempts this mapping but lacks a standard procedure to assess user preferences. Therefore, we created a 24-items survey response scale to score users' preferences towards the six different motivations in the Hexad framework. We used internal and test-retest reliability analysis, as well as factor analysis, to validate this new scale. Further analysis revealed significant associations of the Hexad user types with the Big Five personality traits. In addition, a correlation analysis confirmed the framework's validity as a measure of user preference towards different game design elements. This scale instrument contributes to games user research because it enables accurate measures of user preference in gamification.

Year 2015

Adaptive Engagement of Older Adults’ Fitness through Gamification

@inproceedings{Kappen2015,
Abstract = {Many older adults lead sedentary lifestyles, as the challenges of aging can complicate efforts to maintain a healthy level of physical activity. These challenges can include decreasing strength, reduced mental capacity, social isolation, and the development of chronic health conditions. My PhD research attempts to analyze the needs and challenges of older adults and review their attitudes and motivations towards physical activity (PA). Furthermore, I aim to investigate various approaches in the development of socially interactive fitness activity programs, with the goal of increasing positive lifestyle motivations and quality of life (QoL). This research defines a taxonomy of motivational and personality characteristics of older adults to engage in PA. Lastly, this dissertation proposes the development of an adaptive application that addresses fitness gamification from the motivational perspective of an older adult. This application will empower older adults to engage in PA as a means to gain freedom, mobility and social interdependence within their public spheres.},
Address = {London, United Kingdom},
Author = {D. L. Kappen},
Booktitle = {Proceedings of chi play 2015},
Doi = {10.1145/2793107.2810276},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2015/10/DC.jpg},
Isbn = {9781450334662},
Keywords = {elderly,entertainment technology,game design,gamification,human factors,interaction design,older adults,social interaction,usability},
Publisher = {ACM},
Title = {Adaptive Engagement of Older Adults’ Fitness through Gamification},
Url = {https://hcigames.com/download/adaptive-engagement-of-older-adults-fitness-through-gamification},
Year = {2015},@inproceedings{Kappen2015,

Many older adults lead sedentary lifestyles, as the challenges of aging can complicate efforts to maintain a healthy level of physical activity. These challenges can include decreasing strength, reduced mental capacity, social isolation, and the development of chronic health conditions. My PhD research attempts to analyze the needs and challenges of older adults and review their attitudes and motivations towards physical activity (PA). Furthermore, I aim to investigate various approaches in the development of socially interactive fitness activity programs, with the goal of increasing positive lifestyle motivations and quality of life (QoL). This research defines a taxonomy of motivational and personality characteristics of older adults to engage in PA. Lastly, this dissertation proposes the development of an adaptive application that addresses fitness gamification from the motivational perspective of an older adult. This application will empower older adults to engage in PA as a means to gain freedom, mobility and social interdependence within their public spheres.

All about that Base: Differing Player Experiences in Video Game Genres and the Unique Case of MOBA Games

@inproceedings{Johnson2015,
Abstract = {Video games provide unique interactive player experiences (PX) often categorised into different genres. Prior research has looked at different game genres, but rarely through a PX lens. Especially, PX in the emerging area of massive online battle arena (MOBA) games is not well understood by researchers in the field. We address this knowledge gap by presenting a PX study of different game genres, which we followed up with a second semi-structured interview study about PX in MOBA games. Among the results of our analyses are that games that are likely played with other players, such as MOBA games, stimulate less immersion and presence for players. Additionally, while challenge and frustration are significantly higher in this genre, players get a sense of satisfaction from teamwork, competition and mastery of complex gameplay interactions. Our study is the first to contribute a comprehensive insight into key motivators of MOBA players and how PX in this genre is different from other genres.},
Address = {Seoul, South Korea},
Author = {D. Johnson, L. E. Nacke, and P. Wyeth},
Booktitle = {Proceedings of chi 2015},
DateModified = {2015-03-27 20:11:29 +0000},
Doi = {10.1145/2702123.2702447},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2015/02/All-about-that-Base–Differing-Player-Experiences-in-Video-Game-Genres-and-the-Unique-Case-of-MOBA-Games.png},
Isbn = {9781450331456},
Keywords = {moba, games, player experience},
Organization = {ACM},
Pages = {2265-2274},
Publisher = {ACM},
Title = {All about that Base: Differing Player Experiences in Video Game Genres and the Unique Case of MOBA Games},
Url = {https://hcigames.com/download/all-about-that-base-differing-player-experiences-in-video-game-genres-and-the-unique-case-of-moba-games},
Year = {2015},

Video games provide unique interactive player experiences (PX) often categorised into different genres. Prior research has looked at different game genres, but rarely through a PX lens. Especially, PX in the emerging area of massive online battle arena (MOBA) games is not well understood by researchers in the field. We address this knowledge gap by presenting a PX study of different game genres, which we followed up with a second semi-structured interview study about PX in MOBA games. Among the results of our analyses are that games that are likely played with other players, such as MOBA games, stimulate less immersion and presence for players. Additionally, while challenge and frustration are significantly higher in this genre, players get a sense of satisfaction from teamwork, competition and mastery of complex gameplay interactions. Our study is the first to contribute a comprehensive insight into key motivators of MOBA players and how PX in this genre is different from other genres.

CHI PLAYGUE: A Networking Game of Emergent Sociality

@inproceedings{Tondello2015a,
Abstract = {Modern professional networking is heavily reliant on social media. In recognition of this trend, we present CHI PLAYGUE, a conference game designed to facilitate interaction among strangers and encourage social networking to create a community. The game facilitates the emergence of social dynamics related to trust, allegiance, betrayal, selective interaction, and long- term strategic cooperation. By providing a platform for large-scale playful interaction, we will create an experience that will foster the development of mutually beneficial personal and professional relationships among players.},
Address = {London, United Kingdom},
Author = {G. F. Tondello, R. R. Wehbe, S. N. Stahlke, A. Leo, R. Koroluk, and L. E. Nacke},
Booktitle = {Proceedings of chi play 2015},
Doi = {10.1145/2793107.2810265},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2015/08/CHI-PLAYGUE-A-Networking-Game-of-Emergent-Sociality1.jpg},
Isbn = {9781450334662},
Keywords = {QR code,Social networking game,casual game,gamification,mobile game,social games},
Publisher = {ACM},
Title = {CHI PLAYGUE: A Networking Game of Emergent Sociality},
Url = {https://hcigames.com/download/chi-playgue-a-networking-game-of-emergent-sociality},
Year = {2015},

Modern professional networking is heavily reliant on social media. In recognition of this trend, we present CHI PLAYGUE, a conference game designed to facilitate interaction among strangers and encourage social networking to create a community. The game facilitates the emergence of social dynamics related to trust, allegiance, betrayal, selective interaction, and long- term strategic cooperation. By providing a platform for large-scale playful interaction, we will create an experience that will foster the development of mutually beneficial personal and professional relationships among players.

Data Synchronization in Games User Research

@inproceedings{Wehbe2015a,
Abstract = {By overlapping information from a variety of techniques, researchers are able to gain a better overall picture of the user experience. In Games User Research (GUR) a variety of methodologies are in use ranging from qualitative approaches (e.g. interviews), quantitative approach (e.g. metrics), as well as, physiological approaches (e.g. electroencephalography (EEG)). With the combination of different techniques, synchrony of data collection becomes essential. In the presented paper, details such as sampling rate, marker placement, and time stamps are discussed.},
Address = {London, UK},
Author = {R. R. Wehbe and L. E. Nacke},
Booktitle = {Gur tool design jam},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2015/05/Introducing-the-Biometric-Storyboards-Tool-for-Games-User-Research.png},
Keywords = {Data,Games User Research (GUR),Mixed Measures,Physiological Measures,Sampling Rates,Synchronization,Time Stamps},
Title = {Data Synchronization in Games User Research},
Url = {https://hcigames.com/download/data-synchronization-in-games-user-research},
Year = {2015},

By overlapping information from a variety of techniques, researchers are able to gain a better overall picture of the user experience. In Games User Research (GUR) a variety of methodologies are in use ranging from qualitative approaches (e.g. interviews), quantitative approach (e.g. metrics), as well as, physiological approaches (e.g. electroencephalography (EEG)). With the combination of different techniques, synchrony of data collection becomes essential. In the presented paper, details such as sampling rate, marker placement, and time stamps are discussed.

Games User Research and Physiological Game Evaluation

@incollection{Nacke2015,
abstract = {This chapter introduces physiological measures for game evaluation in the context of games user research (GUR). GUR consists of more than playtesting game; it comprises a collection of methods that allow designers to bring their creations closer to the initial vision of the player experience. With the prices of physiological sensors falling, and the advancement of research in this area, physiological evaluation will soon become a standard tool in GUR and game evaluation. Since mixed-method approaches are of increasingly prominent value, this chapter describes core GUR methods with a special focus on physiological evaluation, keeping in mind both benefits and limitations of the approach in academic and industrial applications.},
author = {Nacke, Lennart E},
booktitle = {Game User Experience Evaluation},
chapter = {4},
doi = {10.1007/978-3-319-15985-0_4},
editor = {Bernhaupt, Regina},
isbn = {978-3-319-15985-0},
mendeley-groups = {HCI Games Group Publications},
pages = {63--86},
publisher = {Springer International Publishing},
title = {{Games User Research and Physiological Game Evaluation}},
url = {https://hcigames.com/download/games-user-research-and-physiological-game-evaluation},
year = {2015}
}

This chapter introduces physiological measures for game evaluation in the context of games user research (GUR). GUR consists of more than playtesting game; it comprises a collection of methods that allow designers to bring their creations closer to the initial vision of the player experience. With the prices of physiological sensors falling, and the advancement of research in this area, physiological evaluation will soon become a standard tool in GUR and game evaluation. Since mixed-method approaches are of increasingly prominent value, this chapter describes core GUR methods with a special focus on physiological evaluation, keeping in mind both benefits and limitations of the approach in academic and industrial applications.

Personalization in Serious and Persuasive Games and Gamified Interactions

@inproceedings{Busch2015,
Abstract = {Serious and persuasive games and gamified interactions have become popular in the last years, especially in the realm of behavior change support systems. They have been used as tools to support and influence human behavior in a variety of fields, such as health, sustainability, education, and security. It has been shown that personalized serious and persuasive games and gamified interactions can increase effectivity of supporting behavior change compared to " one-size-fits all " -systems. However, how serious games and gamified interactions can be personalized, which factors can be used to personalize (e.g. personality, gender, persuadability, player types, gamification user types, states, contextual/situational variables), what effect personalization has (e.g. on player/user experience) and whether there is any return on investment is still largely unexplored. This full-day workshop aims at bringing together the academic and industrial community as well as the gaming and gamification community to jointly explore these topics and define a future roadmap.},
Address = {London, UK},
Author = {M. Busch, E. Mattheiss, R. Orji, A. Marczewski, W. Hochleitner, M. Lankes, L. E. Nacke, and M. Tscheligi},
Booktitle = {Proceedings of the 2015 annual symposium on computer-human interaction in play - chi play '15},
Doi = {10.1145/2793107.2810260},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2015/10/BrainHex.png},
Isbn = {9781450334662},
Pages = {811-816},
Publisher = {ACM},
Title = {Personalization in Serious and Persuasive Games and Gamified Interactions},
Url = {https://hcigames.com/download/personalization-in-serious-and-persuasive-games-and-gamified-interactions},
Year = {2015},

Serious and persuasive games and gamified interactions have become popular in the last years, especially in the realm of behavior change support systems. They have been used as tools to support and influence human behavior in a variety of fields, such as health, sustainability, education, and security. It has been shown that personalized serious and persuasive games and gamified interactions can increase effectivity of supporting behavior change compared to " one-size-fits all " -systems. However, how serious games and gamified interactions can be personalized, which factors can be used to personalize (e.g. personality, gender, persuadability, player types, gamification user types, states, contextual/situational variables), what effect personalization has (e.g. on player/user experience) and whether there is any return on investment is still largely unexplored. This full-day workshop aims at bringing together the academic and industrial community as well as the gaming and gamification community to jointly explore these topics and define a future roadmap.

The HEXAD Gamification User Types Questionnaire : Background and Development Process

@inproceedings{Diamond2015,
Abstract = {The HEXAD gamification user types are attempting a segmentation of users based on their receptivity to varying gamification strategies. The underlying model is based on research on human motivation, player types, and years of practical design experiences. This model presents the first typology to classify users of gamified systems, enabling clustering them based on intrinsic and extrinsic motivational factors. The HEXAD model is comprised of the following six gamification user types: Socializers, Free Spirits, Achievers, Philanthropists, Players, and Disruptors. We have developed a questionnaire to assess how a user is represented by the different gamification user types. The following paper will present the development process of the questionnaire. Application venues will be discussed.},
Address = {London, UK},
Author = {L. Diamond, G. F. Tondello, A. Marczewski, L. E. Nacke, and M. Tscheligi},
Booktitle = {Workshop on personalization in serious and persuasive games and gamified interactions},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2015/10/Gamification-User-Types-Hexad-150.png},
Keywords = {Gamification,Intrinsic and Extrinsic Motivation,Personalization,Questionnaire,User Segmentation/Classification/Typology},
Title = {The HEXAD Gamification User Types Questionnaire : Background and Development Process},
Url = {https://hcigames.com/download/the-hexad-gamification-user-types-questionnaire-background-and-development-process},
Year = {2015},

The HEXAD gamification user types are attempting a segmentation of users based on their receptivity to varying gamification strategies. The underlying model is based on research on human motivation, player types, and years of practical design experiences. This model presents the first typology to classify users of gamified systems, enabling clustering them based on intrinsic and extrinsic motivational factors. The HEXAD model is comprised of the following six gamification user types: Socializers, Free Spirits, Achievers, Philanthropists, Players, and Disruptors. We have developed a questionnaire to assess how a user is represented by the different gamification user types. The following paper will present the development process of the questionnaire. Application venues will be discussed.

Toward Understanding Why Players Value In-Game Collections

@inproceedings{Toups2015,
Abstract = {The purpose of this paper is to investigate why players value in-game objects by collecting data through online survey and, in the near future, through follow-up interviews. Initial analyses of our online survey data reveal how game genre interacts with the the perceived value of the player’s collections. We expect to discover new connections between play style and/or personality type and why players enjoy collecting digital objects. Implications from this work explain what drives player enjoyment, which will inform not only general game design, but specifically enhance retention and interest in serious games, gamified applications, and educational systems.},
Address = {London, UK},
Author = {Z. O. Toups, G. F. Tondello, R. R. Wehbe, L. E. Nacke, and N. K. Crenshaw},
Booktitle = {Workshop on personalization in serious and persuasive games and gamified interactions},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2015/10/troll-priest-25.jpg},
Keywords = {Collections,Game Object Value,Player Attitudes},
Title = {Toward Understanding Why Players Value In-Game Collections},
Url = {https://hcigames.com/download/toward-understanding-why-players-value-in-game-collections},
Year = {2015},

The purpose of this paper is to investigate why players value in-game objects by collecting data through online survey and, in the near future, through follow-up interviews. Initial analyses of our online survey data reveal how game genre interacts with the the perceived value of the player’s collections. We expect to discover new connections between play style and/or personality type and why players enjoy collecting digital objects. Implications from this work explain what drives player enjoyment, which will inform not only general game design, but specifically enhance retention and interest in serious games, gamified applications, and educational systems.

Towards a Personalized Playful Digital Wellness Assistant

@inproceedings{Tondello2015b,
Abstract = {Positive effects of using digital games to improve personal health have been studied, but it remains unclear which game design techniques are most successful at motivating and changing long-term behaviour to improve wellbeing. To inform the design of gamified and effective personal healthcare, we will develop design guidelines and tools for gameful health and wellbeing applications, personalized to the needs and challenges of each individual user.},
Address = {London, UK},
Author = {G. F. Tondello, R. R. Wehbe, and L. E. Nacke},
Booktitle = {Workshop on personalization in serious and persuasive games and gamified interactions},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2015/10/squash-793062_640.jpg},
Keywords = {Adaptive Systems,Health Games,Personal Assistant,Personalization,Persuasive Technologies,Wellness},
Title = {Towards a Personalized Playful Digital Wellness Assistant},
Url = {https://hcigames.com/download/towards-a-personalized-playful-digital-wellness-assistant},
Year = {2015},

Positive effects of using digital games to improve personal health have been studied, but it remains unclear which game design techniques are most successful at motivating and changing long-term behaviour to improve wellbeing. To inform the design of gamified and effective personal healthcare, we will develop design guidelines and tools for gameful health and wellbeing applications, personalized to the needs and challenges of each individual user.

Towards Understanding the Importance of Co-Located Gameplay

@inproceedings{Wehbe2015,
Abstract = {Analyzing the social context present in a gameplay environment and its effect on player experience can provide insights informing the design and social value of games. We investigate the influence of social condition (cooperative or competitive play with a human player versus computer-controlled character) on player experience. The study controlled for co-presence by ensuring that another individual attending to the same stimulus was present in all conditions. Although physiological measures were not significant, subjective measures of arousal and pleasure were significantly different under varying conditions.},
Address = {London, United Kingdom},
Author = {R. R. Wehbe and L. E. Nacke},
Booktitle = {Proceedings of chi play 2015},
Doi = {2793107.2810312},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2015/10/Towards-Understanding-the-Importance-of-Co-Located-Gameplay.jpg},
Isbn = {9781450334662},
Keywords = {Co-located Play,EEG,HR,Multiplayer,Physiological Methods,SC,Single Player,Video Games},
Publisher = {ACM},
Title = {Towards Understanding the Importance of Co-Located Gameplay},
Url = {https://hcigames.com/download/towards-understanding-the-importance-of-co-located-gameplay},
Year = {2015},

Analyzing the social context present in a gameplay environment and its effect on player experience can provide insights informing the design and social value of games. We investigate the influence of social condition (cooperative or competitive play with a human player versus computer-controlled character) on player experience. The study controlled for co-presence by ensuring that another individual attending to the same stimulus was present in all conditions. Although physiological measures were not significant, subjective measures of arousal and pleasure were significantly different under varying conditions.

Understanding Player Attitudes Towards Digital Game Objects

@inproceedings{Tondello2015,
Abstract = {Humans collect; we examine this behavior in digital game contexts to understand how players’ penchant for collecting items can inform game design. As part of an ongoing research agenda to understand player atti- tudes towards digital game objects, we conducted an online survey about player habits with interviews as future work. We present an initial analysis of our data. Our findings suggest that players value game objects most in Role-Playing Games (RPGs). Utility and Enjoy- ment were cited as the main reasons for a digital game objects’ value, followed by Investment, Self-Expression and Memory. Dyes or color-changing features; physical placement adjustments; and naming or name-changing features were the most frequent personalization fea- tures desired for game object customization. We aim to improve game design through a deep understanding of player motivations regarding their game objects.},
Address = {London, United Kingdom},
Author = {G. F. Tondello, R. R. Wehbe, Z. O. Toups, L. E. Nacke, and N. K. Crenshaw},
Booktitle = {Proceedings of chi play 2015},
Doi = {http://dx.doi.org/10.1145/2793107.2810292},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2015/10/troll-priest-25.jpg},
Isbn = {9781450334662},
Keywords = {Game Object Value,Player Attitudes},
Publisher = {ACM},
Title = {Understanding Player Attitudes Towards Digital Game Objects},
Url = {https://hcigames.com/download/understanding-player-attitudes-towards-digital-game-objects},
Year = {2015},

Humans collect; we examine this behavior in digital game contexts to understand how players’ penchant for collecting items can inform game design. As part of an ongoing research agenda to understand player atti- tudes towards digital game objects, we conducted an online survey about player habits with interviews as future work. We present an initial analysis of our data. Our findings suggest that players value game objects most in Role-Playing Games (RPGs). Utility and Enjoy- ment were cited as the main reasons for a digital game objects’ value, followed by Investment, Self-Expression and Memory. Dyes or color-changing features; physical placement adjustments; and naming or name-changing features were the most frequent personalization fea- tures desired for game object customization. We aim to improve game design through a deep understanding of player motivations regarding their game objects.

Validating Test Chambers to Study Cooperative Communication Mechanics in Portal 2

@inproceedings{Vaddi2015,
Abstract = {Cooperative communication mechanics, such as avatar gestures or in-game visual pointers, enable player collaboration directly through gameplay. There are open questions about how players use cooperative communication mechanics, and whether they can effectively supplement or even supplant traditional voice and chat communication. This paper describes a future study to investigate player communication in Portal 2, and chronicles the design and validation of test chambers for the study.},
Address = {London, United Kingdom},
Author = {D. Vaddi, R. R. Wehbe, Z. O. Toups, S. N. Stahlke, R. Koroluk, and L. E. Nacke},
Booktitle = {Proceedings of chi play 2015},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2015/08/Validating-Test-Chambers-to-Study-Cooperative-Communication-Mechanics-in-Portal-2e.jpg},
Keywords = {Game analysis,communication,cooperation,experimentation},
Publisher = {ACM},
Title = {Validating Test Chambers to Study Cooperative Communication Mechanics in Portal 2},
Url = {https://hcigames.com/download/validating-test-chambers-to-study-cooperative-communication-mechanics-in-portal-2},
Year = {2015},

Cooperative communication mechanics, such as avatar gestures or in-game visual pointers, enable player collaboration directly through gameplay. There are open questions about how players use cooperative communication mechanics, and whether they can effectively supplement or even supplant traditional voice and chat communication. This paper describes a future study to investigate player communication in Portal 2, and chronicles the design and validation of test chambers for the study.

Year 2014

BrainHex: A Neurobiological Gamer Typology Survey

@article{nacke2014brainhex,
abstract = {This paper briefly presents a player satisfaction model called BrainHex, which was based on insights from neurobiological findings as well as the results from earlier demographic game design models (DGD1 and DGD2). The model presents seven different archetypes of players: Seeker, Survivor, Daredevil, Mastermind, Conqueror, Socialiser, and Achiever. We explain how each of these player archetypes relates to older player typologies (such as Myers-Briggs), and how each archetype characterizes a specific playing style. We conducted a survey among more than 50,000 players using the BrainHex model as a personality type motivator to gather and compare demographic data to the different BrainHex archetypes. We discuss some results from this survey with a focus on psychometric orientation of respondents, to establish relationships between personality types and BrainHex archetypes.},
author = {Nacke, Lennart E and Bateman, Chris and Mandryk, Regan L},
doi = {10.1016/j.entcom.2013.06.002},
journal = {Entertainment Computing},
mendeley-groups = {HCI Games Group Publications},
number = {1},
pages = {55--62},
publisher = {Elsevier},
title = {{BrainHex: A Neurobiological Gamer Typology Survey}},
url = {https://hcigames.com/download/brainhex-a-neurobiological-gamer-typology-survey},
volume = {5},
year = {2014}
}

This paper briefly presents a player satisfaction model called BrainHex, which was based on insights from neurobiological findings as well as the results from earlier demographic game design models (DGD1 and DGD2). The model presents seven different archetypes of players: Seeker, Survivor, Daredevil, Mastermind, Conqueror, Socialiser, and Achiever. We explain how each of these player archetypes relates to older player typologies (such as Myers-Briggs), and how each archetype characterizes a specific playing style. We conducted a survey among more than 50,000 players using the BrainHex model as a personality type motivator to gather and compare demographic data to the different BrainHex archetypes. We discuss some results from this survey with a focus on psychometric orientation of respondents, to establish relationships between personality types and BrainHex archetypes.

Developing Iconic and Semi-Iconic Game Controllers

@inproceedings{nacke2014developing,
Abstract = {We propose the notion of semi-iconic game input (i.e., sharing some properties of game objects instead of being a complete iconic representation of them) and investigate influence of controller representation on player experience. In particular, we developed game controllers at different degrees of realism (symbolic, semi-iconic, and iconic). We present the developed controllers and initial usability findings.},
Address = {Toronto, ON, Canada},
Author = {L. E. Nacke, J. P. Costa, D. L. Kappen, J. Robb, and D. Buckstein},
Booktitle = {Proceedings of chi play 2014},
Doi = {10.1145/2658537.2661327},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Developing-Iconic-and-Semi-Iconic-Game-Controllers.png},
Organization = {ACM},
Pages = {435-436},
Publisher = {ACM},
Title = {Developing Iconic and Semi-Iconic Game Controllers},
Url = {https://hcigames.com/download/developing-iconic-and-semi-iconic-game-controllers},
Year = {2014},

We propose the notion of semi-iconic game input (i.e., sharing some properties of game objects instead of being a complete iconic representation of them) and investigate influence of controller representation on player experience. In particular, we developed game controllers at different degrees of realism (symbolic, semi-iconic, and iconic). We present the developed controllers and initial usability findings.

Engaged by Boos and Cheers: The Effect of Co-Located Game Audiences on Social Player Experience

@inproceedings{kappen2014engaged,
Abstract = {Little is currently known about the influence of co-located player audiences on gameplay experience. Social player experiences are important to understand in co-located gaming scenarios, because these experiences relate to player performance. Player-audience relationships have been studied before, but prior research focused on player attributes and typology. In our study, we investigated the effect of different co-located audience types (silent, positive, negative) and no audience on player experience. For the study, we contribute a video game specifically developed for two-player, co-located gameplay and findings from questionnaires and semi-structured interviews. Our findings show that both -- negative and positive audience activity -- drove players to become more engaged in the video game. In contrast, silent audiences made players feel unnerved and less engaged in gameplay. Our paper is the first to study of the relevance of co-located audience influence on player experience, which is important for understanding the design of co-located games.},
Address = {Toronto, ON, Canada},
Author = {D. L. Kappen, P. Mirza-Babaei, J. Johannsmeier, D. Buckstein, J. Robb, and L. E. Nacke},
Booktitle = {Proceedings of chi play 2014},
Doi = {10.1145/2658537.2658687},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Engaged-by-Boos-and-Cheers-The-Effect-of-Co-Located-Game-Audiences-on-Social-Player-Experience.png},
Organization = {ACM},
Pages = {151-160},
Publisher = {ACM},
Title = {Engaged by Boos and Cheers: The Effect of Co-Located Game Audiences on Social Player Experience},
Url = {https://hcigames.com/download/engaged-by-boos-and-cheers-the-effect-of-co-located-game-audiences-on-social-player-experience},
Year = {2014},

Little is currently known about the influence of co-located player audiences on gameplay experience. Social player experiences are important to understand in co-located gaming scenarios, because these experiences relate to player performance. Player-audience relationships have been studied before, but prior research focused on player attributes and typology. In our study, we investigated the effect of different co-located audience types (silent, positive, negative) and no audience on player experience. For the study, we contribute a video game specifically developed for two-player, co-located gameplay and findings from questionnaires and semi-structured interviews. Our findings show that both -- negative and positive audience activity -- drove players to become more engaged in the video game. In contrast, silent audiences made players feel unnerved and less engaged in gameplay. Our paper is the first to study of the relevance of co-located audience influence on player experience, which is important for understanding the design of co-located games.

Fuzzy Affective Player Models: A Physiology-Based Hierarchical Clustering Method

@inproceedings{nogueira2014fuzzy,
Abstract = {Current approaches to game design improvements rely on time-consuming gameplay testing processes, which rely on highly subjective feedback from a target audience. In this paper, we propose a generalizable approach for building predictive models of players' emotional reactions across different games and game genres, as well as other forms of digital stimuli. Our input agnostic approach relies on the following steps: (a) collecting players' physiologically-inferred emotional states during actual gameplay sessions, (b) extrapolating the causal relations between changes in players' emotional states and recorded game events, and (c) building hierarchical cluster models of players' emotional reactions that can later be used to infer individual player models via fuzzy cluster membership vectors. We expect this work to benefit game designers by accelerating the affective play-testing process through the offline simulation of players' reactions to game design adaptations, as well as to contribute towards individually-tailored affective gaming.},
Address = {Raleigh, NC, United States},
Author = {P. A. Nogueira, R. Aguiar, R. A. Rodrigues, E. C. Oliveira, and L. E. Nacke},
Booktitle = {Proceedings of AIIDE 2014},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Fuzzy-Affective-Player-Models-A-Physiology-Based-Hierarchical-Clustering-Method.png},
Pages = {132-138},
Publisher = {AAAI},
Title = {Fuzzy Affective Player Models: A Physiology-Based Hierarchical Clustering Method},
Url = {https://hcigames.com/download/fuzzy-affective-player-models-a-physiology-based-hierarchical-clustering-method},
Year = {2014},

Current approaches to game design improvements rely on time-consuming gameplay testing processes, which rely on highly subjective feedback from a target audience. In this paper, we propose a generalizable approach for building predictive models of players' emotional reactions across different games and game genres, as well as other forms of digital stimuli. Our input agnostic approach relies on the following steps: (a) collecting players' physiologically-inferred emotional states during actual gameplay sessions, (b) extrapolating the causal relations between changes in players' emotional states and recorded game events, and (c) building hierarchical cluster models of players' emotional reactions that can later be used to infer individual player models via fuzzy cluster membership vectors. We expect this work to benefit game designers by accelerating the affective play-testing process through the offline simulation of players' reactions to game design adaptations, as well as to contribute towards individually-tailored affective gaming.

Games and Entertainment Community SIG: Reaching Beyond CHI

@inproceedings{nacke2014games,
Abstract = {Games and Entertainment have become important areas of research within the field of Human-Computer Interaction. The community has grown dramatically in the past years. During the previous CHI conference, there were a growing number of game-oriented submissions demonstrating the increased importance of the field. In 2014, the successful Student Games Competition and the Games User Research workshop (in its third iteration) continue to tie together students, researchers and practitioners. Games and Entertainment is one of the five research areas that have been selected as Spotlights in CHI 2014. Given the increase in quantity and variety of submissions, and the involvement and engagement of practitioners within the community, it is important for the community to have this SIG as a forum.},
Address = {Toronto, ON, Canada},
Author = {L. E. Nacke, P. Mirza-Babaei, M. Seif El-Nasr, H. W. Desurvire, and R. Bernhaupt},
Booktitle = {Proceedings of CHI EA 2014},
Doi = {10.1145/2559206.2559216},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Games-and-Entertainment-Community-SIG-Reaching-Beyond-CHI.png},
Organization = {ACM},
Pages = {1123-1126},
Publisher = {ACM},
Title = {Games and Entertainment Community SIG: Reaching Beyond CHI},
Url = {https://hcigames.com/download/games-and-entertainment-community-sig-reaching-beyond-chi},
Year = {2014},

Games and Entertainment have become important areas of research within the field of Human-Computer Interaction. The community has grown dramatically in the past years. During the previous CHI conference, there were a growing number of game-oriented submissions demonstrating the increased importance of the field. In 2014, the successful Student Games Competition and the Games User Research workshop (in its third iteration) continue to tie together students, researchers and practitioners. Games and Entertainment is one of the five research areas that have been selected as Spotlights in CHI 2014. Given the increase in quantity and variety of submissions, and the involvement and engagement of practitioners within the community, it is important for the community to have this SIG as a forum.

Introducing the Biometric Storyboards Tool for Games User Research

@inproceedings{mirza2014introducing,
Abstract = {Evaluating and communicating affective user experience in games is an important component of the growing field of games user research (GUR). An important goal for the game industry and researchers alike is the successful unification of physiological measurements and player experience reports to generate meaningful insights, which is challenging due to the varying natures of the data. In this paper, we present a tool that facilitates GUR with a method called Biometric Storyboards (BioSt). The tool allows GUR professionals to visualize relationships between changes in a player's physiological state, a player's self-reported experience, and in-game events. This paper focuses on the BioSt development stages and the final BioSt tool that we present to facilitate the creation implementation of BioSt and its analysis procedure.},
Address = {Toronto, ON, Canada},
Author = {P. Mirza-Babaei and L. Nacke},
Booktitle = {Proceedings of ieee gem 2014},
Doi = {10.1109/GEM.2014.7048098},
Img = {http://hcigames.com/wp-content/uploads/2015/05/Introducing-the-Biometric-Storyboards-Tool-for-Games-User-Research.png},
Keywords = {Current measurement,Data visualization,Electromyography,Games,Muscles,Physiology,Prototypes,affective evaluation,games design,games user research,physiological evaluation,user experience,video games},
MendeleyTags = {Current measurement,Data visualization,Electromyography,Games,Muscles,Physiology,Prototypes},
Pages = {1-7},
Publisher = {IEEE},
Title = {Introducing the Biometric Storyboards Tool for Games User Research},
Url = {https://hcigames.com/download/introducing-the-biometric-storyboards-tool-for-games-user-research},
Year = {2014},

Evaluating and communicating affective user experience in games is an important component of the growing field of games user research (GUR). An important goal for the game industry and researchers alike is the successful unification of physiological measurements and player experience reports to generate meaningful insights, which is challenging due to the varying natures of the data. In this paper, we present a tool that facilitates GUR with a method called Biometric Storyboards (BioSt). The tool allows GUR professionals to visualize relationships between changes in a player's physiological state, a player's self-reported experience, and in-game events. This paper focuses on the BioSt development stages and the final BioSt tool that we present to facilitate the creation implementation of BioSt and its analysis procedure.

Physiological Acrophobia Evaluation Through In Vivo Exposure in a VR CAVE

@inproceedings{costa2014physiological,
Abstract = {Acrophobia (i.e., the fear of heights) is commonly treated using Virtual Reality (VR) applications. Patients that suffer from this clinical condition can experience extreme levels of anxiety, stress, and discomfort, even at relatively low heights. VR computer-assisted virtual environments (CAVEs) have been found to be highly immersive and successful in the treatment of acrophobia. The general method of evaluating therapy progress is through self-reported questionnaire measures. However, these are subject to participant bias. Physiological measures, on the other hand, could provide a more objective way of assessing acrophobia. To our knowledge, psychophysiological measures are not commonly used in the evaluation of acrophobes and their therapy progress within CAVEs. Thus, we present a CAVE application for acrophobia treatment, which includes a physiological feedback mechanism to assess patient progress. It also permits patient movement to facilitate increased presence and immersion. In this application, players sequentially gain access to increasing heights as they successfully progress through lesser heights, as assessed through the evaluation of their physiological responses to VR stimuli.},
Address = {Toronto, ON, Canada},
Author = {J. P. Costa, J. Robb, and L. E. Nacke},
Booktitle = {Proceedings of IEEE GEM 2014},
Doi = {10.1109/GEM.2014.7047969},
Img = {http://hcigames.com/wp-content/uploads/2015/05/Physiological-acrophobia-evaluation-through-in-vivo-exposure-in-a-VR-CAVE.png},
Keywords = {Acrophobia,Biofeedback,Buildings,CAVE,Electroencephalography,Games,In vivo,Medical treatment,Physiological Measures,Physiology,Virtual Reality,Virtual reality},
MendeleyTags = {Buildings,Electroencephalography,Games,In vivo,Medical treatment,Physiology,Virtual reality},
Pages = {1-4},
Publisher = {IEEE},
Title = {Physiological Acrophobia Evaluation Through In Vivo Exposure in a VR CAVE},
Url = {https://hcigames.com/download/physiological-acrophobia-evaluation-through-in-vivo-exposure-in-a-vr-cave},
Year = {2014},

Acrophobia (i.e., the fear of heights) is commonly treated using Virtual Reality (VR) applications. Patients that suffer from this clinical condition can experience extreme levels of anxiety, stress, and discomfort, even at relatively low heights. VR computer-assisted virtual environments (CAVEs) have been found to be highly immersive and successful in the treatment of acrophobia. The general method of evaluating therapy progress is through self-reported questionnaire measures. However, these are subject to participant bias. Physiological measures, on the other hand, could provide a more objective way of assessing acrophobia. To our knowledge, psychophysiological measures are not commonly used in the evaluation of acrophobes and their therapy progress within CAVEs. Thus, we present a CAVE application for acrophobia treatment, which includes a physiological feedback mechanism to assess patient progress. It also permits patient movement to facilitate increased presence and immersion. In this application, players sequentially gain access to increasing heights as they successfully progress through lesser heights, as assessed through the evaluation of their physiological responses to VR stimuli.

Player Experience: Mixed Methods and Reporting Results

@inproceedings{zammitto2014player,
Abstract = {The community of video game researchers has been rapidly evolving for the past few years, extending and modifying existing methodologies used by the HCI community to the environment of digital games. This one-day workshop investigates two areas that must be addressed to continue advancing the field: mixed method frameworks which integrate two or more techniques within a single study; and reporting as an integral part of the research process. The outcome of the workshop will be an archive of both the workshop submissions and the materials (posters and group productions). This will extend the discussion of topics beyond the workshop, and serve as a platform for future use and work. This one day workshop will bring together contributions from practitioners and academics in a yet untapped area of games user research.},
Address = {Toronto, ON, Canada},
Author = {V. Zammitto, P. Mirza-Babaei, I. J. Livingston, M. Kobayashi, and L. E. Nacke},
Booktitle = {Proceedings of CHI EA 2014},
Doi = {10.1145/2559206.2559239},
Organization = {ACM},
Pages = {147-150},
Publisher = {ACM},
Title = {Player Experience: Mixed Methods and Reporting Results},
Url = {https://hcigames.com/download/player-experience-mixed-methods-and-reporting-results},
Year = {2014},

The community of video game researchers has been rapidly evolving for the past few years, extending and modifying existing methodologies used by the HCI community to the environment of digital games. This one-day workshop investigates two areas that must be addressed to continue advancing the field: mixed method frameworks which integrate two or more techniques within a single study; and reporting as an integral part of the research process. The outcome of the workshop will be an archive of both the workshop submissions and the materials (posters and group productions). This will extend the discussion of topics beyond the workshop, and serve as a platform for future use and work. This one day workshop will bring together contributions from practitioners and academics in a yet untapped area of games user research.

Social Player Analytics in a Facebook Health Game

@inproceedings{Nacke:2014:SPA:2729485.2729512,
Abstract = {Social health games can drive healthy behaviour. To track social behaviour change in social network games (SNGs), gameplay metrics should quantify socially-engaging gameplay behaviour based on player interactions. We developed social player metrics in a quantitative study of player behaviour in a social health game called Healthseeker (developed by Ayogo Health Inc.). This Facebook game targets people with diabetes to help them manage health goals in real life. Our metrics identify which game mechanics led to more gameplay success, connectedness and virality. We also identified how the behaviour of successful players differs from unsuccessful players in the game. Our results support that game mechanics aiming at social interactions can motivate players to solve more missions, to fulfill more healthy goals and to play the game longer. We conclude that having a well-connected social network can improve player success in solving game missions.},
Address = {Seoul, Republic of Korea},
Author = {L. E. Nacke, M. Klauser, and P. Prescod},
Booktitle = {Proceedings of HCI Korea},
Img = {http://hcigames.com/wp-content/uploads/2015/05/HealthSeeker.png},
Isbn = {978-89-6848-752-1},
Numpages = {8},
Pages = {180-187},
Publisher = {Hanbit Media, Inc.},
Series = {HCIK '15},
Title = {Social Player Analytics in a Facebook Health Game},
Url = {https://hcigames.com/download/social-player-analytics-in-a-facebook-health-game},
Year = {2014},

Social health games can drive healthy behaviour. To track social behaviour change in social network games (SNGs), gameplay metrics should quantify socially-engaging gameplay behaviour based on player interactions. We developed social player metrics in a quantitative study of player behaviour in a social health game called Healthseeker (developed by Ayogo Health Inc.). This Facebook game targets people with diabetes to help them manage health goals in real life. Our metrics identify which game mechanics led to more gameplay success, connectedness and virality. We also identified how the behaviour of successful players differs from unsuccessful players in the game. Our results support that game mechanics aiming at social interactions can motivate players to solve more missions, to fulfill more healthy goals and to play the game longer. We conclude that having a well-connected social network can improve player success in solving game missions.

The Edge of Glory: The Relationship Between Metacritic Scores and Player Experience

@inproceedings{johnson2014edge,
Abstract = {This study sought to examine how measures of player experience used in videogame research relate to Metacritic Professional and User scores. In total, 573 participants completed an online survey, where they responded the Player Experience of Need Satisfaction (PENS) and the Game Experience Questionnaire (GEQ) in relation to their current favourite videogame. Correlations among the data indicate an overlap between the player experience constructs and the factors informing Metacritic scores. Additionally, differences emerged in the ways professionals and users appear to allocate game ratings. However, the data also provide clear evidence that Metacritic scores do not reflect the full complexity of player experience and may be misleading in some cases.},
Address = {Toronto, ON, Canada},
Author = {D. Johnson, C. Watling, J. Gardner, and L. E. Nacke},
Booktitle = {Proceedings of CHI PLAY 2014},
Doi = {10.1145/2658537.2658694},
Img = {http://hcigames.com/wp-content/uploads/2015/05/the_edge_of_glory__the_relationship_between_m_scores_and_player_experience.png},
Organization = {ACM},
Pages = {141-150},
Publisher = {ACM},
Title = {The Edge of Glory: The Relationship Between Metacritic Scores and Player Experience},
Url = {https://hcigames.com/download/the-edge-of-glory-the-relationship-between-metacritic-scores-and-player-experience},
Year = {2014},

This study sought to examine how measures of player experience used in videogame research relate to Metacritic Professional and User scores. In total, 573 participants completed an online survey, where they responded the Player Experience of Need Satisfaction (PENS) and the Game Experience Questionnaire (GEQ) in relation to their current favourite videogame. Correlations among the data indicate an overlap between the player experience constructs and the factors informing Metacritic scores. Additionally, differences emerged in the ways professionals and users appear to allocate game ratings. However, the data also provide clear evidence that Metacritic scores do not reflect the full complexity of player experience and may be misleading in some cases.

Understanding Expectations with Multiple Controllers in an Augmented Reality Videogame

@inproceedings{mirza2014understanding,
Abstract = {Player experiences and expectations are connected. The presumptions players have about how they control their gameplay interactions may shape the way they play and perceive videogames. A successfully engaging player experience might rest on the way controllers meet players' expectations. We studied player interaction with novel controllers on the Sony PlayStation Wonderbook, an augmented reality (AR) gaming system. Our goal was to understand player expectations regarding game controllers in AR game design. Based on this preliminary study, we propose several interaction guidelines for hybrid input from both augmented reality and physical game controllers},
Address = {Toronto, ON, Canada},
Author = {P. Mirza-Babaei, N. Gale, J. P. Costa, L. E. Nacke, and D. Johnson},
Booktitle = {Proceedings of CHI PLAY 2014},
Doi = {10.1145/2658537.2658705},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Understanding-Expectations-with-Multiple-Controllers-in-an-Augemented-Reality-Videogame.png},
Organization = {ACM},
Pages = {201-206},
Publisher = {ACM},
Title = {Understanding Expectations with Multiple Controllers in an Augmented Reality Videogame},
Url = {https://hcigames.com/download/understanding-expectations-with-multiple-controllers-in-an-augmented-reality-videogame},
Year = {2014},

Player experiences and expectations are connected. The presumptions players have about how they control their gameplay interactions may shape the way they play and perceive videogames. A successfully engaging player experience might rest on the way controllers meet players' expectations. We studied player interaction with novel controllers on the Sony PlayStation Wonderbook, an augmented reality (AR) gaming system. Our goal was to understand player expectations regarding game controllers in AR game design. Based on this preliminary study, we propose several interaction guidelines for hybrid input from both augmented reality and physical game controllers

Unified Visualization of Quantitative and Qualitative Playtesting Data

@inproceedings{mirza2014unified,
Abstract = {A major challenge in studying player experience is tying together the results of quantitative and qualitative games user research (GUR) data. For example, combining data from players' physiological measures with questionnaire or interview results and in-game movement data into a single report is not straightforward because the underlying data is often in different formats. Visualization techniques can facilitate the understanding of relationships among these data sets. Although various visualization techniques have already been introduced in GUR, most of these techniques only focus on displaying large amounts of data captured directly via telemetry without integrating qualitative or contextual data on players' emotional experience. Hence, here we propose a novel visualization approach to triangulate the above mentioned mixed data sources.},
Address = {Toronto, ON, Canada},
Author = {P. Mirza-Babaei, G. Wallner, G. McAllister, and L. E. Nacke},
Booktitle = {Proceedings of chi ea 2014},
Doi = {10.1145/2559206.2581224},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Unified-Visualization-of-Quantitative-and-Qualitative-Playtesting-Data.png},
Organization = {ACM},
Pages = {1363-1368},
Publisher = {ACM},
Title = {Unified Visualization of Quantitative and Qualitative Playtesting Data},
Url = {https://hcigames.com/download/unified-visualization-of-quantitative-and-qualitative-playtesting-data},
Year = {2014},

A major challenge in studying player experience is tying together the results of quantitative and qualitative games user research (GUR) data. For example, combining data from players' physiological measures with questionnaire or interview results and in-game movement data into a single report is not straightforward because the underlying data is often in different formats. Visualization techniques can facilitate the understanding of relationships among these data sets. Although various visualization techniques have already been introduced in GUR, most of these techniques only focus on displaying large amounts of data captured directly via telemetry without integrating qualitative or contextual data on players' emotional experience. Hence, here we propose a novel visualization approach to triangulate the above mentioned mixed data sources.

Year 2013

A Hybrid Approach at Emotional State Detection: Merging Theoretical Models of Emotion with Data-Driven Statistical Classifiers

@inproceedings{nogueira2013hybrid,
Abstract = {With the rising popularity of affective computing techniques, there have been several advances in the field of emotion recognition systems. However, despite the several advances in the field, these systems still face scenario adaptability and practical implementation issues. In light of these issues, we developed a nonspecific method for emotional state classification in interactive environments. The proposed method employs a two-layer classification process to detect Arousal and Valence (the emotion's hedonic component), based on four psychophysiological metrics: Skin Conductance, Heart Rate and Electromyography measured at the corrugator supercilii and zygomaticus major muscles. The first classification layer applies multiple regression models to correctly scale the aforementioned metrics across participants and experimental conditions, while also correlating them to the Arousal or Valence dimensions. The second layer then explores several machine learning techniques to merge the regression outputs into one final rating. The obtained results indicate we are able to classify Arousal and Valence independently from participant and experimental conditions with satisfactory accuracy (97\% for Arousal and 91\% for Valence).},
Address = {Atlanta, GA, United States},
Author = {P. A. Nogueira, R. A. Rodrigues, E. Oliveira, and L. E. Nacke},
Booktitle = {Proceedings of WI-IAT 2013},
Doi = {10.1109/WI-IAT.2013.117},
Img = {http://hcigames.com/wp-content/uploads/2015/02/A-Hybrid-Approach-at-Emotional-State-Detection-Merging-Theoretical-Models-of-Emotion-with-Data-Driven-Statistical-Classifiers.png},
Organization = {IEEE},
Pages = {253-260},
Publisher = {IEEE},
Title = {A Hybrid Approach at Emotional State Detection: Merging Theoretical Models of Emotion with Data-Driven Statistical Classifiers},
Url = {https://hcigames.com/download/a-hybrid-approach-at-emotional-state-detection-merging-theoretical-models-of-emotion-with-data-driven-statistical-classifiers},
Volume = {2},
Year = {2013},

With the rising popularity of affective computing techniques, there have been several advances in the field of emotion recognition systems. However, despite the several advances in the field, these systems still face scenario adaptability and practical implementation issues. In light of these issues, we developed a nonspecific method for emotional state classification in interactive environments. The proposed method employs a two-layer classification process to detect Arousal and Valence (the emotion's hedonic component), based on four psychophysiological metrics: Skin Conductance, Heart Rate and Electromyography measured at the corrugator supercilii and zygomaticus major muscles. The first classification layer applies multiple regression models to correctly scale the aforementioned metrics across participants and experimental conditions, while also correlating them to the Arousal or Valence dimensions. The second layer then explores several machine learning techniques to merge the regression outputs into one final rating. The obtained results indicate we are able to classify Arousal and Valence independently from participant and experimental conditions with satisfactory accuracy (97\% for Arousal and 91\% for Valence).

A Regression-Based Method for Lightweight Emotional State Detection in Interactive Environments

@article{nogueira2013regression,
Abstract = {With the popularity increase in affective computing techniques the number of emotion detection and recognition systems has risen considerably. However, despite their steady accuracy improvement, they are yet faced with application domain transferability and practical implementation issues. In this paper, we present a novel methodology for modelling individuals' emotional states in multimedia interactive environments, while addressing the aforemen- tioned transferability and practical implementation issues. Our method relies on a two-layer classification process to classify Arousal and Valence based on four distinct physiological sensor inputs. The first classification layer uses several regression models to normalize each of the sensor inputs across participants and experimental conditions, while also correlating each input to either Arousal or Valence. The second classification layer then employs decision trees to merge the various regression outputs into one optimal Arousal/Valence classification. The presented method not only exhibits convincing accuracy ratings -- 89\% for Arousal and 84\% for Valence - but also presents an adaptable and practical ap- proach at emotional state detection in interactive environment experiences.},
Address = {Angra do Heroísmo, Açores, Portugal},
Author = {P. A. Nogueira, R. A. Rodrigues, E. Oliveira, and L. E. Nacke},
Img = {http://hcigames.com/wp-content/uploads/2015/05/A-Regression-Based-Method-for-Lightweight-Emotional-State-Detection-in-Interactive-Environments.png},
Journal = {Proceedings of epia 2013},
Publisher = {Springer-Verlag Berlin Heidelberg},
Title = {A Regression-Based Method for Lightweight Emotional State Detection in Interactive Environments},
Url = {https://hcigames.com/download/a-regression-based-method-for-lightweight-emotional-state-detection-in-interactive-environments},
Year = {2013},

With the popularity increase in affective computing techniques the number of emotion detection and recognition systems has risen considerably. However, despite their steady accuracy improvement, they are yet faced with application domain transferability and practical implementation issues. In this paper, we present a novel methodology for modelling individuals' emotional states in multimedia interactive environments, while addressing the aforemen- tioned transferability and practical implementation issues. Our method relies on a two-layer classification process to classify Arousal and Valence based on four distinct physiological sensor inputs. The first classification layer uses several regression models to normalize each of the sensor inputs across participants and experimental conditions, while also correlating each input to either Arousal or Valence. The second classification layer then employs decision trees to merge the various regression outputs into one optimal Arousal/Valence classification. The presented method not only exhibits convincing accuracy ratings -- 89\% for Arousal and 84\% for Valence - but also presents an adaptable and practical ap- proach at emotional state detection in interactive environment experiences.

An Introduction to EEG Analysis Techniques and Brain-Computer Interfaces for Games User Researchers

@inproceedings{wehbe2013introduction,
Abstract = {Games User Research (GUR) can provide meaningful insights into the study of games. As a part of GUR, we focus on the area of cognitive psychology and discuss electroencephalography (EEG) as an evaluation technique for games. We want to introduce game researchers to EEG when studying the cognitive side of player experience and discuss how it can benefit game studies. In this paper, we review EEG techniques before providing researchers with information about general EEG setup and methodology, EEG data collection, preparation, and analysis. Techniques reviewed have been used in medical applications, research, brain-computer interaction (BCI) and human-computer interaction (HCI) applications. In addition, future ideas for applications of EEG techniques in game studies are discussed. We outline how to use different EEG analysis techniques for game research and it is our hope to make these techniques more understandable for the game studies community and to demonstrate their merit for games user research.},
Address = {Atlanta, GA, United States},
Author = {R. R. Wehbe and L. E. Nacke},
Booktitle = {Proceedings of digra 2013},
Img = {http://hcigames.com/wp-content/uploads/2015/05/an_introduction_to_eeg_analysis_techniques_and_brain-computer_interfaces_for_games_user_researchers.png},
Organization = {DiGRA},
Pages = {1-16},
Publisher = {DiGRA},
Title = {An Introduction to EEG Analysis Techniques and Brain-Computer Interfaces for Games User Researchers},
Url = {https://hcigames.com/download/an-introduction-to-eeg-analysis-techniques-and-brain-computer-interfaces-for-games-user-researchers},
Year = {2013},

Games User Research (GUR) can provide meaningful insights into the study of games. As a part of GUR, we focus on the area of cognitive psychology and discuss electroencephalography (EEG) as an evaluation technique for games. We want to introduce game researchers to EEG when studying the cognitive side of player experience and discuss how it can benefit game studies. In this paper, we review EEG techniques before providing researchers with information about general EEG setup and methodology, EEG data collection, preparation, and analysis. Techniques reviewed have been used in medical applications, research, brain-computer interaction (BCI) and human-computer interaction (HCI) applications. In addition, future ideas for applications of EEG techniques in game studies are discussed. We outline how to use different EEG analysis techniques for game research and it is our hope to make these techniques more understandable for the game studies community and to demonstrate their merit for games user research.

An Introduction to Physiological Player Metrics for Evaluating Games

@incollection{nacke2013introduction,
Abstract = {Evaluating affective user experience in games is an important component of the growing field of game user research, because compelling gameplay experiences incorporate meaningful and, therefore, emotional player decisions. This makes evaluating player emotions and player visceral physiological reactions a fascinating field of study for game researchers. With their recent success in the human factors domain, physiological metrics, which complement game metrics, have been successfully used to study player engagement and emotion in research and industry. This chapter provides a brief introduction to and primer of physiological measures currently used in game research and discusses the benefits and challenges of this quantitative method of game user research.},
Author = {L. E. Nacke},
Booktitle = {Game analytics - maximizing the value of player data},
Chapter = {26},
Doi = {10.1007/978-1-4471-4769-5_26},
Editor = {M. {Seif El-Nasr}, A. Drachen, and A. Canossa},
Img = {http://hcigames.com/wp-content/uploads/2015/05/an_introduction_to_physiological_player_metrics_for_evaluating_games.png},
Isbn = {1447147685},
Pages = {585-619},
Publisher = {Springer London},
Title = {An Introduction to Physiological Player Metrics for Evaluating Games},
Url = {http://link.springer.com/chapter/10.1007/978-1-4471-4769-5_26},
Year = {2013},

Evaluating affective user experience in games is an important component of the growing field of game user research, because compelling gameplay experiences incorporate meaningful and, therefore, emotional player decisions. This makes evaluating player emotions and player visceral physiological reactions a fascinating field of study for game researchers. With their recent success in the human factors domain, physiological metrics, which complement game metrics, have been successfully used to study player engagement and emotion in research and industry. This chapter provides a brief introduction to and primer of physiological measures currently used in game research and discusses the benefits and challenges of this quantitative method of game user research.

Assessing User Preference of Video Game Controller Button Settings

@inproceedings{ellick2013assessing,
Abstract = {Only very few studies exist linking preference in controller usage to physiological effects and user experience (UX). While many games already feature different controller layouts, there is a lack of research on whether giving control to participants over their button choices affects their UX in the game. In our study, participants were given two predetermined button configurations for playing FIFA 12. Their preferences were assessed through electroencephalography (EEG) and a Game Experience Questionnaire (GEQ). Our results show no significant difference in EEG intensity between participants using their preferred or non-preferred button settings. Preference also appears to have no significant effect on subjective feelings assessed by the GEQ. We have identified three distinct factors that may have potentially compromised this study. These findings could help to structure future research in this area.},
Address = {Paris, France},
Author = {W. Ellick, P. Mirza-Babaei, S. Wood, D. Smith, and L. E. Nacke},
Booktitle = {Proceedings of CHI EA 2013},
Doi = {10.1145/2468356.2468554},
Img = {http://hcigames.com/wp-content/uploads/2015/05/Assessing-User-Preference-of-Video-Game-Controller-Button-Settings.png},
Organization = {ACM},
Pages = {1107-1112},
Publisher = {ACM},
Title = {Assessing User Preference of Video Game Controller Button Settings},
Url = {https://hcigames.com/download/assessing-user-preference-of-video-game-controller-button-settings},
Year = {2013},

Only very few studies exist linking preference in controller usage to physiological effects and user experience (UX). While many games already feature different controller layouts, there is a lack of research on whether giving control to participants over their button choices affects their UX in the game. In our study, participants were given two predetermined button configurations for playing FIFA 12. Their preferences were assessed through electroencephalography (EEG) and a Game Experience Questionnaire (GEQ). Our results show no significant difference in EEG intensity between participants using their preferred or non-preferred button settings. Preference also appears to have no significant effect on subjective feelings assessed by the GEQ. We have identified three distinct factors that may have potentially compromised this study. These findings could help to structure future research in this area.

Contextual Influences on Mobile Player Experience--A Game User Experience Model

@article{engl2012contextual,
Abstract = {In this paper we are discussing a new model of mobile gameplay experience with a special focus on contextual influences of play in ubiquitous environments. The model was developed based on prior general gameplay models which were extended and refined based on the results and personal experiences taken from several evaluative user field studies with mobile games. The experimental results point to two different playing contexts: home and mobile, which were evaluated with a gameplay experience questionnaire (GEQ). The GEQ showed significant difference in negative affect and immersion between mobile and home setting, which are moderated by several influencing contextual factors. This leads us to propose a contextual gameplay experience model that accounts for spatial, temporal, social, cultural, and psychological influences in an external context. The implications of the contextual gameplay model are discussed in light of future research.},
Author = {S. Engl and L. E. Nacke},
Doi = {10.1016/j.entcom.2012.06.001},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Contextual-Influences-on-Mobile-Player-Experience–A-Game-User-Experience-Model.png},
Journal = {Entertainment Computing},
Number = {1},
Pages = {83-91},
Publisher = {Elsevier},
Title = {Contextual Influences on Mobile Player Experience--A Game User Experience Model},
Url = {https://hcigames.com/download/contextual-influences-on-mobile-player-experience-a-game-user-experience-model},
Volume = {4},
Year = {2013},

In this paper we are discussing a new model of mobile gameplay experience with a special focus on contextual influences of play in ubiquitous environments. The model was developed based on prior general gameplay models which were extended and refined based on the results and personal experiences taken from several evaluative user field studies with mobile games. The experimental results point to two different playing contexts: home and mobile, which were evaluated with a gameplay experience questionnaire (GEQ). The GEQ showed significant difference in negative affect and immersion between mobile and home setting, which are moderated by several influencing contextual factors. This leads us to propose a contextual gameplay experience model that accounts for spatial, temporal, social, cultural, and psychological influences in an external context. The implications of the contextual gameplay model are discussed in light of future research.

Deconstructing `Gamified' Task-Management Applications

@inproceedings{kappen2013deconstructing,
Abstract = {Many tasks---and the societal need to attend events as part of our office culture---have an overwhelming effect on our management capacity. Using gamification to make task and chore management more exciting could allow people to be more productive while they are engaged and focused on their tasks. There is currently a lack of studies on the usefulness of gamified task-management applications. We address this by taking a look at two memory-aid applications with task-based gamification: Task Hammer (TH) and Epic Win (EW). Among our findings is that TH was easier to learn to use while EW was more satisfying and motivating. Participants who felt good about an apps' reward system were also more satisfied with its use. Conventional task managers are, however, preferred for speed and efficiency. Based on our interviews, it seems that gamified task managers are not more useful than classical ones. However, there is a relation between how participants perceive game elements and how useful they find it for task management.},
Address = {Stratford, ON, Canada},
Author = {D. L. Kappen, J. Johannsmeier, and L. E. Nacke},
Booktitle = {Proceedings of gamification 2013},
Img = {http://hcigames.com/wp-content/uploads/2015/05/Deconstructing-Gamified-Task-Management-Applications.png},
Organization = {ACM},
Pages = {139-142},
Publisher = {ACM},
Title = {Deconstructing `Gamified' Task-Management Applications},
Url = {https://hcigames.com/download/deconstructing-`gamified'-task-management-applications},
Year = {2013},

Many tasks---and the societal need to attend events as part of our office culture---have an overwhelming effect on our management capacity. Using gamification to make task and chore management more exciting could allow people to be more productive while they are engaged and focused on their tasks. There is currently a lack of studies on the usefulness of gamified task-management applications. We address this by taking a look at two memory-aid applications with task-based gamification: Task Hammer (TH) and Epic Win (EW). Among our findings is that TH was easier to learn to use while EW was more satisfying and motivating. Participants who felt good about an apps' reward system were also more satisfied with its use. Conventional task managers are, however, preferred for speed and efficiency. Based on our interviews, it seems that gamified task managers are not more useful than classical ones. However, there is a relation between how participants perceive game elements and how useful they find it for task management.

Designing and Evaluating Sociability in Online Video Games

@inproceedings{christou2013designing,
Abstract = {The emergence of Online Video Games has led to new ways of socializing with friends. Nowadays a good online game is also associated with the pleasure of socializing and interaction with other players. One cannot play such a game solitarily in a meaningful sense without interacting with the other players. However, there are still no integrated ways of designing and evaluating the inherent sociability of online video games, nor are there methods or guidelines for designing and evaluating social user experiences. Designers of online video games are often left to use their intuition and experience, many times leading to design failures. This workshop aims to further the understanding of designing for sociability and evaluating such designs for online video games. The goal is to exact a framework for the design of sociability structures in online games, and identify methods of effective evaluation of those structures that are practical and can be applied in the industry. With the wide reach of online video games, the time is ripe to codify and integrate the methods that have been developed for designing and evaluating social player experiences. The results will then be turned into a methodological framework that enables online video game designers to select appropriately existing methods and tools to design and evaluate systematically the social player experience of their online computer game prototypes and products.},
Address = {Paris, France},
Author = {G. Christou, E. Law, D. Geerts, L. E. Nacke, and P. Zaphiris},
Booktitle = {Proceedings of CHI EA 2013},
Doi = {10.1145/2468356.2479656},
Organization = {ACM},
Pages = {3239-3242},
Publisher = {ACM},
Title = {Designing and Evaluating Sociability in Online Video Games},
Url = {https://hcigames.com/download/designing-and-evaluating-sociability-in-online-video-games},
Year = {2013},

The emergence of Online Video Games has led to new ways of socializing with friends. Nowadays a good online game is also associated with the pleasure of socializing and interaction with other players. One cannot play such a game solitarily in a meaningful sense without interacting with the other players. However, there are still no integrated ways of designing and evaluating the inherent sociability of online video games, nor are there methods or guidelines for designing and evaluating social user experiences. Designers of online video games are often left to use their intuition and experience, many times leading to design failures. This workshop aims to further the understanding of designing for sociability and evaluating such designs for online video games. The goal is to exact a framework for the design of sociability structures in online games, and identify methods of effective evaluation of those structures that are practical and can be applied in the industry. With the wide reach of online video games, the time is ripe to codify and integrate the methods that have been developed for designing and evaluating social player experiences. The results will then be turned into a methodological framework that enables online video game designers to select appropriately existing methods and tools to design and evaluate systematically the social player experience of their online computer game prototypes and products.

Designing Gamification: Creating Gameful and Playful Experiences

@inproceedings{deterding2013designing,
Abstract = {In recent years, gamification - the use of game design elements in non-game contexts - has seen rapid adoption in the software industry, as well as a growing body of research on its uses and effects. However, little is known about the effective design of such gameful systems, including whether their evaluation requires special approaches. This workshop therefore convenes researchers and industry practitioners to identify current practices, challenges, and open research questions in the design of gameful systems.},
Address = {Paris, France},
Author = {S. Deterding, S. L. Björk, L. E. Nacke, D. Dixon, and E. Lawley},
Booktitle = {Proceedings of CHI EA 2013},
Doi = {10.1145/2468356.2479662},
Img = {http://hcigames.com/wp-content/uploads/2015/05/designing_gamification_creating_gameful_and_playful_experiences.png},
Organization = {ACM},
Pages = {3263-3266},
Publisher = {ACM},
Title = {Designing Gamification: Creating Gameful and Playful Experiences},
Url = {https://hcigames.com/download/designing-gamification-creating-gameful-and-playful-experiences},
Year = {2013},

In recent years, gamification - the use of game design elements in non-game contexts - has seen rapid adoption in the software industry, as well as a growing body of research on its uses and effects. However, little is known about the effective design of such gameful systems, including whether their evaluation requires special approaches. This workshop therefore convenes researchers and industry practitioners to identify current practices, challenges, and open research questions in the design of gameful systems.

EEG-Based Assessment of Video and In-Game Learning

@inproceedings{wehbe2013eeg,
Abstract = {People often learn game-related information in video games by taking turns playing and watching each other play. This type of in-game learning involves both observation and imitation of actions. However, games are also made to be learnt individually during gameplay. Our study seeks to assess which is more effective for learning: just playing a game yourself or watching somebody play it first. We compare two gameplay situations: playing a digital game before watching a game-play video and playing a digital game after watching a gameplay video. Using a between-participants design, to measure learning effectiveness we recorded Mu rhythms, which are indirectly linked to mirror neuron activation during imitation learning. We also analyze hemispheric frontal alpha asymmetry. Our results indicate that presentation order of the video game matters and players are more aroused when watching a gameplay video before playing.},
Address = {Paris, France},
Author = {R. R. Wehbe, D. L. Kappen, D. Rojas, M. Klauser, B. Kapralos, and L. E. Nacke},
Booktitle = {Proceedings of CHI EA 2013},
Doi = {10.1145/2468356.2468474},
Img = {http://hcigames.com/wp-content/uploads/2015/05/eeg-based_assessment_of_video_and_in-game_learning.png},
Organization = {ACM},
Pages = {667-672},
Publisher = {ACM},
Title = {EEG-Based Assessment of Video and In-Game Learning},
Url = {https://hcigames.com/download/eeg-based-assessment-of-video-and-in-game-learning},
Year = {2013},

People often learn game-related information in video games by taking turns playing and watching each other play. This type of in-game learning involves both observation and imitation of actions. However, games are also made to be learnt individually during gameplay. Our study seeks to assess which is more effective for learning: just playing a game yourself or watching somebody play it first. We compare two gameplay situations: playing a digital game before watching a game-play video and playing a digital game after watching a gameplay video. Using a between-participants design, to measure learning effectiveness we recorded Mu rhythms, which are indirectly linked to mirror neuron activation during imitation learning. We also analyze hemispheric frontal alpha asymmetry. Our results indicate that presentation order of the video game matters and players are more aroused when watching a gameplay video before playing.

Exploring Social Interaction in Co-Located Multiplayer Games

@inproceedings{kappen2013exploring,
Abstract = {Games have always been a social activity. Playing digital games affords spending time with people; helps build personal connections between individuals and helps to redefine the personality of the player while in play. Games also enable to build the concept of togetherness as a means to foster and enhance the concept of social connectedness, mutual dependencies, collaboration, community living and social interaction. We present a work in progress digital game installation to create multi-level social interactions between the player, the spatial game environment and the digital game. We discuss MagicDuel, a multiplayer digital game, where we are in the process of evaluating the socio-spatial contextual relationship between the players, the audience and gameplay elements for this specific digital game.},
Address = {Paris, France},
Author = {D. L. Kappen, J. Gregory, D. Stepchenko, R. R. Wehbe, and L. E. Nacke},
Booktitle = {Proceedings of CHI EA 2013},
Doi = {10.1145/2468356.2468556},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Exploring-Social-Interaction-in-Co-Located-Multiplayer-Games.png},
Organization = {ACM},
Pages = {1119-1124},
Publisher = {ACM},
Title = {Exploring Social Interaction in Co-Located Multiplayer Games},
Url = {https://hcigames.com/download/exploring-social-interaction-in-co-located-multiplayer-games},
Year = {2013},

Games have always been a social activity. Playing digital games affords spending time with people; helps build personal connections between individuals and helps to redefine the personality of the player while in play. Games also enable to build the concept of togetherness as a means to foster and enhance the concept of social connectedness, mutual dependencies, collaboration, community living and social interaction. We present a work in progress digital game installation to create multi-level social interactions between the player, the spatial game environment and the digital game. We discuss MagicDuel, a multiplayer digital game, where we are in the process of evaluating the socio-spatial contextual relationship between the players, the audience and gameplay elements for this specific digital game.

Games User Research: Practice, Methods, and Applications

@inproceedings{mirza2013games,
Abstract = {Games User Research (GUR) is an emerging field that ties together Human-Computer Interaction (HCI) and Game Development. The GUR community has rapidly evolved over the past few years (spawning an International Game Developers Association Special Interest Group). In this workshop, we are investigating different methodologies currently used in practice. We will highlight benefits and drawbacks in assessing game design issues hoping to gain insights into player experience. The outcome will be a collection of best practices online, showing practitioners and researchers how to apply these techniques. We will also peer-review and publish extended versions of paper submissions in a Cognitive Science Research Papers Special Issue on GUR. This will extend the discussion of topics beyond the workshop and serve as a platform for future work.},
Address = {Paris, France},
Author = {P. Mirza-Babaei, V. Zammitto, J. Niesenhaus, M. Sangin, and L. E. Nacke},
Booktitle = {Proceedings of CHI EA 2013},
Doi = {10.1145/2468356.2479651},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Games-User-Research-Practice-Methods-and-Applications.png},
Organization = {ACM},
Pages = {3219-3222},
Publisher = {ACM},
Title = {Games User Research: Practice, Methods, and Applications},
Url = {https://hcigames.com/download/games-user-research-practice-methods-and-applications},
Year = {2013},

Games User Research (GUR) is an emerging field that ties together Human-Computer Interaction (HCI) and Game Development. The GUR community has rapidly evolved over the past few years (spawning an International Game Developers Association Special Interest Group). In this workshop, we are investigating different methodologies currently used in practice. We will highlight benefits and drawbacks in assessing game design issues hoping to gain insights into player experience. The outcome will be a collection of best practices online, showing practitioners and researchers how to apply these techniques. We will also peer-review and publish extended versions of paper submissions in a Cognitive Science Research Papers Special Issue on GUR. This will extend the discussion of topics beyond the workshop and serve as a platform for future work.

Guided Emotional State Regulation: Understanding and Shaping Players' Affective Experiences in Digital Games

@inproceedings{nogueira2013guided,
Abstract = {Designing adaptive games for individual emotional experi- ences is a tricky task, especially when detecting a player's emotional state in real time requires physiological sensing hardware and signal processing software. There is currently a lack of software that can identify and learn how emotional states in games are triggered. To address this problem, we developed a system capable of understanding the fundamen- tal relations between emotional responses and their eliciting events. We propose time-evolving Affective Reaction Mod- els (ARM), which learn new affective reactions and manage conflicting ones. These models are then meant to provide in- formation on how a set of predetermined game parameters (e.g., enemy and item spawning, music and lighting effects) should be adapted, to modulate the player's emotional state. In this paper, we propose and describe a framework for modulating player emotions and the main components in- volved in regulating players' affective experience. We ex- pect our technique will allow game designers to focus on defining high-level rules for generating gameplay experi- ences instead of having to create and test different content for each player type.},
Address = {Palo Alto, CA, United States},
Author = {P. A. Nogueira, R. A. Rodrigues, E. C. Oliveira, and L. E. Nacke},
Booktitle = {Proceedings of aiide 2009},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Guided-Emotional-State-Regulation-Understanding-and-Shaping-Players-Affective-Experiences-in-Digital-Games.png},
Pages = {51-57},
Title = {Guided Emotional State Regulation: Understanding and Shaping Players' Affective Experiences in Digital Games},
Url = {https://hcigames.com/download/guided-emotional-state-regulation-understanding-and-shaping-players'-affective-experiences-in-digital-games},
Year = {2013},

Designing adaptive games for individual emotional experi- ences is a tricky task, especially when detecting a player's emotional state in real time requires physiological sensing hardware and signal processing software. There is currently a lack of software that can identify and learn how emotional states in games are triggered. To address this problem, we developed a system capable of understanding the fundamen- tal relations between emotional responses and their eliciting events. We propose time-evolving Affective Reaction Mod- els (ARM), which learn new affective reactions and manage conflicting ones. These models are then meant to provide in- formation on how a set of predetermined game parameters (e.g., enemy and item spawning, music and lighting effects) should be adapted, to modulate the player's emotional state. In this paper, we propose and describe a framework for modulating player emotions and the main components in- volved in regulating players' affective experience. We ex- pect our technique will allow game designers to focus on defining high-level rules for generating gameplay experi- ences instead of having to create and test different content for each player type.

How Does It Play Better? Exploring User Testing and Biometric Storyboards in Games User Research

@article{mirza2013does,
Abstract = {Improving game design is a hard task. Few methods are available in games user research (GUR) to test formally how game designs work for players. In particular, the usefulness of user tests (UTs) for game designers has not been fully studied in the CHI community. We propose a novel GUR method called Biometric Storyboards (BioSt) and present a study demonstrating how a Classic UT and a BioSt UT both help designers create a better gameplay experience. In addition, we show that BioSt can help designers deliver significantly better visuals, more fun, and higher gameplay quality than designing without UTs and that classic UTs do not provide this significant advantage. Our interviews support the idea that BioSt provides more nuanced game design improvement. The design implication is that a game designed with the BioSt method will result in high gameplay quality.},
Address = {Paris, France},
Author = {P. Mirza-Babaei, L. E. Nacke, J. Gregory, N. Collins, and G. Fitzpatrick},
Doi = {10.1145/2470654.2466200},
Img = {http://hcigames.com/wp-content/uploads/2015/02/How-Does-It-Play-Better-Exploring-User-Testing-and-Biometric-Storyboards-in-Games-User-Research.png},
Journal = {Proceedings of CHI 2013},
Pages = {1499-1508},
Publisher = {ACM},
Title = {How Does It Play Better? Exploring User Testing and Biometric Storyboards in Games User Research},
Url = {https://hcigames.com/download/how-does-it-play-better-exploring-user-testing-and-biometric-storyboards-in-games-user-research},
Year = {2013},

Improving game design is a hard task. Few methods are available in games user research (GUR) to test formally how game designs work for players. In particular, the usefulness of user tests (UTs) for game designers has not been fully studied in the CHI community. We propose a novel GUR method called Biometric Storyboards (BioSt) and present a study demonstrating how a Classic UT and a BioSt UT both help designers create a better gameplay experience. In addition, we show that BioSt can help designers deliver significantly better visuals, more fun, and higher gameplay quality than designing without UTs and that classic UTs do not provide this significant advantage. Our interviews support the idea that BioSt provides more nuanced game design improvement. The design implication is that a game designed with the BioSt method will result in high gameplay quality.

The Effect of Sound on Visual Fidelity Perception in Stereoscopic 3-D

@article{rojas2013effect,
Abstract = {Visual and auditory cues are important facilitators of user engagement in virtual environments and video games. Prior research supports the notion that our perception of visual fidelity (quality) is influenced by auditory stimuli. Understanding exactly how our perception of visual fidelity changes in the pres- ence of multimodal stimuli can potentially impact the design of virtual environments, thus creating more engaging virtual worlds and scenarios. Stereoscopic 3-D display technology provides the users with additional visual information (depth into and out of the screen plane). There have been relatively few studies that have investigated the impact that auditory stimuli have on our perception of visual fidelity in the presence of stereoscopic 3-D. Building on previous work, we examine the effect of auditory stimuli on our perception of visual fidelity within a stereoscopic 3-D environment.},
Author = {D. Rojas, B. Kapralos, A. Hogue, K. Collins, L. E. Nacke, S. Cristancho, C. Conati, and A. Dubrowski},
Doi = {10.1109/TCYB.2013.2269712},
Img = {http://hcigames.com/wp-content/uploads/2015/02/The-Effect-of-Sound-on-Visual-Fidelity-Perception-in-Stereoscopic-3-D.png},
Journal = {IEEE Transactions on Cybernetics},
Number = {6},
Pages = {1572-1583},
Publisher = {IEEE},
Title = {The Effect of Sound on Visual Fidelity Perception in Stereoscopic 3-D},
Url = {https://hcigames.com/download/the-effect-of-sound-on-visual-fidelity-perception-in-stereoscopic-3-d},
Volume = {43},
Year = {2013},

Visual and auditory cues are important facilitators of user engagement in virtual environments and video games. Prior research supports the notion that our perception of visual fidelity (quality) is influenced by auditory stimuli. Understanding exactly how our perception of visual fidelity changes in the pres- ence of multimodal stimuli can potentially impact the design of virtual environments, thus creating more engaging virtual worlds and scenarios. Stereoscopic 3-D display technology provides the users with additional visual information (depth into and out of the screen plane). There have been relatively few studies that have investigated the impact that auditory stimuli have on our perception of visual fidelity in the presence of stereoscopic 3-D. Building on previous work, we examine the effect of auditory stimuli on our perception of visual fidelity within a stereoscopic 3-D environment.

The Kaleidoscope of Effective Gamification: Deconstructing Gamification in Business Applications

@inproceedings{kappen2013kaleidoscope,
Abstract = {Developers of gamified business applications face the chal- lenge of creating motivating gameplay strategies and crea- tive design techniques to deliver subject matter not typically associated with games in a playful way. We currently lack models that frame what makes gamification effective (e.g., what drives people to engage with a business application). Thus, we propose a design approach and analysis tool for gamification: The Kaleidoscope of Effective Gamification. We take a look at current models of game design, self de- termination theory and the principles of systems design to deconstruct the gamification layer in the design of these applications. Based on the layers of our model, we provide design guidelines for effective gamification.},
Address = {Stratford, ON, Canada},
Author = {D. L. Kappen and L. E. Nacke},
Booktitle = {Proceedings of gamification 2013},
Img = {http://hcigames.com/wp-content/uploads/2015/02/The-Kaleidoscope-of-Effective-Gamification-Deconstructing-Gamification-in-Business-Applications.png},
Organization = {ACM},
Pages = {119-122},
Publisher = {ACM},
Title = {The Kaleidoscope of Effective Gamification: Deconstructing Gamification in Business Applications},
Url = {https://hcigames.com/download/the-kaleidoscope-of-effective-gamification-deconstructing-gamification-in-business-applications},
Year = {2013},

Developers of gamified business applications face the chal- lenge of creating motivating gameplay strategies and crea- tive design techniques to deliver subject matter not typically associated with games in a playful way. We currently lack models that frame what makes gamification effective (e.g., what drives people to engage with a business application). Thus, we propose a design approach and analysis tool for gamification: The Kaleidoscope of Effective Gamification. We take a look at current models of game design, self de- termination theory and the principles of systems design to deconstruct the gamification layer in the design of these applications. Based on the layers of our model, we provide design guidelines for effective gamification.

Time's Up: Studying Leaderboards for Engaging Punctual Behaviour

@inproceedings{costa2013time,
Abstract = {In the workplace, an individual's punctuality will not only have an effect on how a person is viewed by colleagues, but will also reverberate on their productivity. Being late for a meeting can be disruptive to the working team, costing everyone time and causing the individual to miss valuable information. Little has been done to improve the punctuali- ty of working teams. Therefore, we were interested in stud- ying the effectiveness of leaderboards, a common gamifica- tion technique, for improving punctuality of participants to regular work meetings. Leaderboards were comprised of data collected by monitoring the arrival times of the partici- pants, which influenced their scores in the leaderboards. We found that leaderboards themselves did not promote punc- tuality of every participant, but gave rise to various gameful social comparisons. These gameful social comparisons that emerged among participants when using leaderboards for our meetings were reported to be the cause of their punctu- ality improvements.},
Address = {Stratford, ON, Canada},
Author = {J. P. Costa, R. R. Wehbe, J. Robb, and L. E. Nacke},
Booktitle = {Proceedings of gamification 2013},
Organization = {ACM},
Pages = {26-33},
Publisher = {ACM},
Title = {Time's Up: Studying Leaderboards for Engaging Punctual Behaviour},
Url = {https://hcigames.com/download/time's-up-studying-leaderboards-for-engaging-punctual-behaviour},
Year = {2013},

In the workplace, an individual's punctuality will not only have an effect on how a person is viewed by colleagues, but will also reverberate on their productivity. Being late for a meeting can be disruptive to the working team, costing everyone time and causing the individual to miss valuable information. Little has been done to improve the punctuali- ty of working teams. Therefore, we were interested in stud- ying the effectiveness of leaderboards, a common gamifica- tion technique, for improving punctuality of participants to regular work meetings. Leaderboards were comprised of data collected by monitoring the arrival times of the partici- pants, which influenced their scores in the leaderboards. We found that leaderboards themselves did not promote punc- tuality of every participant, but gave rise to various gameful social comparisons. These gameful social comparisons that emerged among participants when using leaderboards for our meetings were reported to be the cause of their punctu- ality improvements.

Year 2012

"I'm Just Here to Play Games": Social Dynamics and Sociality in an Online Game Site

@inproceedings{mcewan2012m,
Abstract = {There are many web sites that allow people to play board or card games against other human players. These sites offer tools and opportunities for social interaction, but little is known about how people really interact on these sites. To learn more about social dynamics on game sites, we analysed three months of log files from a large site to explore three themes: permanence (whether people formed a long-term association with the site); social interaction (in terms of shared activity and verbal communication); and formation of ties (whether people made contacts with others). Our analyses showed that while the site seems very social when we consider gameplay, the population was highly transient, and people talked very little. To explain these behaviours, we suggest that games and game-based activity should be considered as a legitimate form of human interaction. Our analysis provides new information and new ways of thinking about how game environments can be designed to support many kinds of sociability.},
Address = {Seattle, WA, United States},
Author = {G. McEwan, C. Gutwin, R. L. Mandryk, and L. E. Nacke},
Booktitle = {Proceedings of cscw 2012},
Doi = {10.1145/2145204.2145289},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Im-Just-Here-to-Play-Games-Social-Dynamics-and-Sociality-in-an-Online-Game-Site.png},
Organization = {ACM},
Pages = {549-558},
Publisher = {ACM},
Title = {"I'm Just Here to Play Games": Social Dynamics and Sociality in an Online Game Site},
Url = {https://hcigames.com/download/%E2%80%9Ci'm-just-here-to-play-games%E2%80%9D-social-dynamics-and-sociality-in-an-online-game-site},
Year = {2012},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/02/Im-Just-Here-to-Play-Games-Social-Dynamics-and-Sociality-in-an-Online-Game-Site.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/2145204.2145289}}

There are many web sites that allow people to play board or card games against other human players. These sites offer tools and opportunities for social interaction, but little is known about how people really interact on these sites. To learn more about social dynamics on game sites, we analysed three months of log files from a large site to explore three themes: permanence (whether people formed a long-term association with the site); social interaction (in terms of shared activity and verbal communication); and formation of ties (whether people made contacts with others). Our analyses showed that while the site seems very social when we consider gameplay, the population was highly transient, and people talked very little. To explain these behaviours, we suggest that games and game-based activity should be considered as a legitimate form of human interaction. Our analysis provides new information and new ways of thinking about how game environments can be designed to support many kinds of sociability.

Analysing Social Metrics in an Online Game Site

@article{mcewan2012analysing,
Abstract = {Understanding real-time coordination behaviour around multiplayer games is important as it allows designers to make informed decisions about supporting player communities. However, studying existing sites is difficult because of the amounts and range of data involved. In this paper, we argue for using social accounting metrics to investigate large game sites.},
Address = {Montréal, QC, Canada},
Author = {G. McEwan, C. Gutwin, R. L. Mandryk, and L. E. Nacke},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Analysing-Social-Metrics-in-an-Online-Game-Site.png},
Journal = {Proceedings of grand 2012},
Publisher = {GRAND},
Title = {Analysing Social Metrics in an Online Game Site},
Url = {https://hcigames.com/download/analysing-social-metrics-in-an-online-game-site},
Year = {2012},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Analysing-Social-Metrics-in-an-Online-Game-Site.pdf}}

Understanding real-time coordination behaviour around multiplayer games is important as it allows designers to make informed decisions about supporting player communities. However, studying existing sites is difficult because of the amounts and range of data involved. In this paper, we argue for using social accounting metrics to investigate large game sites.

Biometric Storyboards: Visualising Game User Research Data

@inproceedings{mirza2012biometric,
Abstract = {Player experience is difficult to evaluate and report, especially using quantitative methodologies in addition to observations and interviews. One step towards tying quantitative physiological measures of player arousal to player experience reports are Biometric Storyboards (BioSt). They can visualise meaningful relationships between a player's physiological changes and game events. This paper evaluates the usefulness of BioSt to the game industry. We presented the Biometric Storyboards technique to six game developers and interviewed them about the advantages and disadvantages of this technique.},
Address = {Austin, TX, United States},
Author = {P. Mirza-Babaei, L. E. Nacke, G. Fitzpatrick, G. White, G. McAllister, and N. Collins},
Booktitle = {Proceedings of chi ea 2012},
Doi = {10.1145/2212776.2223795},
Img = {http://hcigames.com/wp-content/uploads/2015/05/Biometric-Storyboards-Visualising-Game-User-Research-Data.png},
Organization = {ACM},
Pages = {2315-2320},
Publisher = {ACM},
Title = {Biometric Storyboards: Visualising Game User Research Data},
Url = {https://hcigames.com/download/biometric-storyboards-visualising-game-user-research-data},
Year = {2012},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Biometric-Storyboards-Visualising-Game-User-Research-Data.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/2212776.2223795}}

Player experience is difficult to evaluate and report, especially using quantitative methodologies in addition to observations and interviews. One step towards tying quantitative physiological measures of player arousal to player experience reports are Biometric Storyboards (BioSt). They can visualise meaningful relationships between a player's physiological changes and game events. This paper evaluates the usefulness of BioSt to the game industry. We presented the Biometric Storyboards technique to six game developers and interviewed them about the advantages and disadvantages of this technique.

Feedback-Based Gameplay Metrics: Measuring Player Experience via Automatic Visual Analysis

@inproceedings{marczak2012feedback,
Abstract = {Using gameplay metrics to articulate player interaction within game systems has received increased interest in game studies. The value of gameplay metrics comes from a desire to empirically validate over a decade of theorization of player experience and knowledge of games as ludic systems. Taking gameplay metrics beyond formalized user testing (i.e. with the aim of improving a product) allows researchers the freedom of examining any commercially available game without the need to have access to the game's source code. This paper offers a new methodology to obtain data on player behavior, achieved through analyzing video and audio streams. Game interface features are being analyzed automatically, which are indicative of player behavior and gameplay events. This paper outlines the development of this methodology and its application to research that seeks to understand the nature of engagement and player motivations.},
Address = {Auckland, New Zealand},
Author = {R. Marczak, J. van Vught, G. Schott, and L. E. Nacke},
Booktitle = {Proceedings of acm ie 2012},
Doi = {10.1145/2336727.2336733},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Feedback-Based-Gameplay-Metrics-Measuring-Player-Experience-via-Automatic-Visual-Analysis.png},
Organization = {ACM},
Pages = {6},
Publisher = {ACM},
Title = {Feedback-Based Gameplay Metrics: Measuring Player Experience via Automatic Visual Analysis},
Url = {https://hcigames.com/download/feedback-based-gameplay-metrics-measuring-player-experience-via-automatic-visual-analysis},
Year = {2012},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Feedback-Based-Gameplay-Metrics-Measuring-Player-Experience-via-Automatic-Visual-Analysis.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/2336727.2336733}}

Using gameplay metrics to articulate player interaction within game systems has received increased interest in game studies. The value of gameplay metrics comes from a desire to empirically validate over a decade of theorization of player experience and knowledge of games as ludic systems. Taking gameplay metrics beyond formalized user testing (i.e. with the aim of improving a product) allows researchers the freedom of examining any commercially available game without the need to have access to the game's source code. This paper offers a new methodology to obtain data on player behavior, achieved through analyzing video and audio streams. Game interface features are being analyzed automatically, which are indicative of player behavior and gameplay events. This paper outlines the development of this methodology and its application to research that seeks to understand the nature of engagement and player motivations.

Flow in Games: Proposing a Flow Experience Model

@inproceedings{nacke2012flow,
Abstract = {When discussing fun in games, one will ultimately have to discuss the matching of skills and challenges as proposed in Csikszentmihalyi's flow theory, an influential concept in game design. In this position paper, I want to give a brief overview of flow theory and its application in game research, as well as propose a model for further discussion that synthesizes common streams in game flow research. I hope this synthesis will be challenged and can serve as a discussion point for flow theory and player experience in games.},
Address = {Toulouse, France},
Author = {L. E. Nacke},
Booktitle = {Proceedings of the workshop on conceptualising, operationalising and measuring the player experience in videogames at fun and games 2012},
Img = {http://hcigames.com/wp-content/uploads/2015/05/Flow-in-Games-Proposing-a-Flow-Experience-Model.png},
Organization = {QUT},
Pages = {104-108},
Publisher = {ACM},
Title = {Flow in Games: Proposing a Flow Experience Model},
Url = {https://hcigames.com/download/flow-in-games-proposing-a-flow-experience-model},
Year = {2012},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Flow-in-Games-Proposing-a-Flow-Experience-Model.pdf}}

When discussing fun in games, one will ultimately have to discuss the matching of skills and challenges as proposed in Csikszentmihalyi's flow theory, an influential concept in game design. In this position paper, I want to give a brief overview of flow theory and its application in game research, as well as propose a model for further discussion that synthesizes common streams in game flow research. I hope this synthesis will be challenged and can serve as a discussion point for flow theory and player experience in games.

Full-Body Motion-Based Game Interaction for Older Adults

@inproceedings{gerling2012full,
Abstract = {Older adults in nursing homes often lead sedentary lifestyles, which reduces their life expectancy. Full-body motion-control games provide an opportunity for these adults to remain active and engaged; these games are not designed with age-related impairments in mind, which prevents the games from being leveraged to increase the activity levels of older adults. In this paper, we present two studies aimed at developing game design guidelines for full-body motion controls for older adults experiencing age-related changes and impairments. Our studies also demonstrate how full-body motion-control games can accommodate a variety of user abilities, have a positive effect on mood and, by extension, the emotional well-being of older adults. Based on our studies, we present seven guidelines for the design of full-body interaction in games. The guidelines are designed to foster safe physical activity among older adults, thereby increasing their quality of life.},
Address = {Austin, TX, United States},
Author = {K. M. Gerling, I. J. Livingston, L. E. Nacke, and R. L. Mandryk},
Booktitle = {Proceedings of sigchi 2012},
Doi = {10.1145/2207676.2208324},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Full-Body-Motion-Based-Game-Interaction-for-Older-Adults.png},
Organization = {ACM},
Pages = {1873-1882},
Publisher = {ACM},
Title = {Full-Body Motion-Based Game Interaction for Older Adults},
Url = {https://hcigames.com/download/full-body-motion-based-game-interaction-for-older-adults},
Year = {2012},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Full-Body-Motion-Based-Game-Interaction-for-Older-Adults.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/2207676.2208324}}

Older adults in nursing homes often lead sedentary lifestyles, which reduces their life expectancy. Full-body motion-control games provide an opportunity for these adults to remain active and engaged; these games are not designed with age-related impairments in mind, which prevents the games from being leveraged to increase the activity levels of older adults. In this paper, we present two studies aimed at developing game design guidelines for full-body motion controls for older adults experiencing age-related changes and impairments. Our studies also demonstrate how full-body motion-control games can accommodate a variety of user abilities, have a positive effect on mood and, by extension, the emotional well-being of older adults. Based on our studies, we present seven guidelines for the design of full-body interaction in games. The guidelines are designed to foster safe physical activity among older adults, thereby increasing their quality of life.

Game User Research

@inproceedings{seif2012game,
Abstract = {Game User Research is an emerging field that ties together Human Computer Interaction, Game Development, and Experimental Psychology, specifically investigating the interaction between players and games. The community of Game User Research has been rapidly evolving for the past few years, extending and modifying existing methodologies used by the HCI community to the environment of digital games. In this workshop, we plan to investigate the different methodologies currently in practice within the field as well as their utilities and drawbacks in measuring game design issues or gaining insight about the players' experience. The outcome of the workshop will be a collection of lessons from the trenches and commonly used techniques published in a public online forum. This will extend the discussion of topics beyond the workshop, and serve as a platform for future work. The workshop will be the first of its kind at CHI, tying together HCI research and Game User Research.},
Address = {Austin, TX, United States},
Author = {M. Seif El-Nasr, H. W. Desurvire, L. E. Nacke, A. Drachen, L. Calvi, K. Isbister, and R. Bernhaupt},
Booktitle = {Proceedings of chi ea 2012},
Doi = {10.1145/2212776.2212694},
Organization = {ACM},
Pages = {2679-2682},
Publisher = {ACM},
Title = {Game User Research},
Url = {https://hcigames.com/download/game-user-research},
Year = {2012},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Game-User-Research.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/2212776.2212694}}

Game User Research is an emerging field that ties together Human Computer Interaction, Game Development, and Experimental Psychology, specifically investigating the interaction between players and games. The community of Game User Research has been rapidly evolving for the past few years, extending and modifying existing methodologies used by the HCI community to the environment of digital games. In this workshop, we plan to investigate the different methodologies currently in practice within the field as well as their utilities and drawbacks in measuring game design issues or gaining insight about the players' experience. The outcome of the workshop will be a collection of lessons from the trenches and commonly used techniques published in a public online forum. This will extend the discussion of topics beyond the workshop, and serve as a platform for future work. The workshop will be the first of its kind at CHI, tying together HCI research and Game User Research.

Mixed Reality Games

@inproceedings{bonsignore2012mixed,
Abstract = {Collaborative technologies increasingly permeate our everyday lives. Mixed reality games use these technologies to entertain, motivate, educate, and inspire. We understand mixed reality games as goal-directed, structured play experiences that are not fully contained by virtual or physical worlds. They transform existing technologies, relationships, and places into platforms for gameplay. While the design of mixed reality games has received increasing attention across multiple disciplines, a focus on the collaborative potential of mixed reality formats, such as augmented and alternate reality games, has been lacking. We believe the CSCW community can play an essential and unique role in examining and designing the next generation of mixed reality games and technologies that support them. To this end, we seek to bring together researchers, designers, and players to advance an integrated mixed reality games' research canon and outline key opportunities and challenges for future research and development.},
Address = {Seattle, WA, United States},
Author = {E. M. Bonsignore, D. L. Hansen, Z. O. Toups, L. E. Nacke, A. Salter, and W. Lutters},
Booktitle = {Proceedings of cscw 2012},
Doi = {10.1145/2141512.2141517},
Organization = {ACM},
Pages = {7-8},
Publisher = {ACM},
Title = {Mixed Reality Games},
Url = {https://hcigames.com/download/mixed-reality-games},
Year = {2012},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Mixed-Reality-Games.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/2141512.2141517}}

Collaborative technologies increasingly permeate our everyday lives. Mixed reality games use these technologies to entertain, motivate, educate, and inspire. We understand mixed reality games as goal-directed, structured play experiences that are not fully contained by virtual or physical worlds. They transform existing technologies, relationships, and places into platforms for gameplay. While the design of mixed reality games has received increasing attention across multiple disciplines, a focus on the collaborative potential of mixed reality formats, such as augmented and alternate reality games, has been lacking. We believe the CSCW community can play an essential and unique role in examining and designing the next generation of mixed reality games and technologies that support them. To this end, we seek to bring together researchers, designers, and players to advance an integrated mixed reality games' research canon and outline key opportunities and challenges for future research and development.

Motion-Based Game Design for Older Adults

@article{gerling2012motion,
Abstract = {Older adults in nursing homes often lead sedentary lifestyles, which reduces their life expectancy. Full-body motion-control games provide an opportunity for these adults to remain active and engaged; but these games are not designed with age-related impairments in mind, which prevents the games from being leveraged to increase the activity levels of older adults. In this paper, we create a gardening game specifically addressing institutionalized older adults. Additionally, we present an evaluation of the game that demonstrates how full-body motion-control games can accommodate a variety of user abilities, have a positive effect on mood and, by extension, the emotional well-being of older adults, thereby increasing their quality of life.},
Address = {Montréal, QC, Canada},
Author = {K. M. Gerling, I. J. Livingston, L. E. Nacke, and R. L. Mandryk},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Motion-Based-Game-Design-for-Older-Adults.png},
Journal = {Proceedings of grand 2012},
Publisher = {GRAND},
Title = {Motion-Based Game Design for Older Adults},
Url = {https://hcigames.com/download/motion-based-game-design-for-older-adults},
Year = {2012},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Motion-Based-Game-Design-for-Older-Adults.pdf}}

Older adults in nursing homes often lead sedentary lifestyles, which reduces their life expectancy. Full-body motion-control games provide an opportunity for these adults to remain active and engaged; but these games are not designed with age-related impairments in mind, which prevents the games from being leveraged to increase the activity levels of older adults. In this paper, we create a gardening game specifically addressing institutionalized older adults. Additionally, we present an evaluation of the game that demonstrates how full-body motion-control games can accommodate a variety of user abilities, have a positive effect on mood and, by extension, the emotional well-being of older adults, thereby increasing their quality of life.

Year 2011

Accessible Games SIG

@inproceedings{lund2011accessible,
Abstract = {Video games are early adopters of emerging technologies and introduce them to the mainstream market. Increasingly work-related applications follow the lead of entertainment systems. Yet with the growing importance and complexity of 3D technologies and virtual worlds, motion and gesture interfaces, more barriers are being raised that prevent people with disabilities from using or fully enjoying them. These new gaming experiences often require more control than current assistive technologies can support, even when the architectures themselves are designed to be accessible. The Accessible Games SIG will provide an opportunity for people working in the area of accessible games and entertainment or who can bring value to the area to meet and network, and to discuss future community building activities. A goal is to stimulate more collaboration in the accessible games area. In addition to sharing current work and identifying areas of common interest, a scenario focused exercise will be held that imagines a fully accessible networked virtual world game in order to uncover opportunities for research and innovation.},
Address = {Vancouver, BC, Canada},
Author = {A. Lund, A. Perkins, S. Kurniawan, and L. E. Nacke},
Booktitle = {Proceedings of chi ea 2011},
Doi = {10.1145/1979742.1979545},
Organization = {ACM},
Pages = {883-886},
Publisher = {ACM},
Title = {Accessible Games SIG},
Url = {https://hcigames.com/download/accessible-games-sig},
Year = {2011},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Accessible-Games-SIG.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/1979742.1979545}}

Video games are early adopters of emerging technologies and introduce them to the mainstream market. Increasingly work-related applications follow the lead of entertainment systems. Yet with the growing importance and complexity of 3D technologies and virtual worlds, motion and gesture interfaces, more barriers are being raised that prevent people with disabilities from using or fully enjoying them. These new gaming experiences often require more control than current assistive technologies can support, even when the architectures themselves are designed to be accessible. The Accessible Games SIG will provide an opportunity for people working in the area of accessible games and entertainment or who can bring value to the area to meet and network, and to discuss future community building activities. A goal is to stimulate more collaboration in the accessible games area. In addition to sharing current work and identifying areas of common interest, a scenario focused exercise will be held that imagines a fully accessible networked virtual world game in order to uncover opportunities for research and innovation.

Biofeedback Game Design: Using Direct and Indirect Physiological Control to Enhance Game Interaction

@inproceedings{Nacke2011a,
Abstract = {Prior work on physiological game interaction has focused on dynamically adapting games using physiological sensors. In this paper, we propose a classification of direct and indirect physiological sensor input to augment traditional game control. To find out which sensors work best for which game mechanics, we conducted a mixed-methods study using different sensor mappings. Our results show participants have a preference for direct physiological control in games. This has two major design implications for physiologically controlled games: (1) Direct physiological sensors should be mapped intuitively to reflect an action in the virtual world; (2) Indirect physiological input is best used as a dramatic device in games to influence features altering the game world.},
Address = {Vancouver, BC, Canada},
Author = {L. E. Nacke, M. Kalyn, C. Lough, and R. L. Mandryk},
Booktitle = {Proceedings of chi 2011},
Doi = {10.1145/1978942.1978958},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Biofeedback-Game-Design-Using-Direct-and-Indirect-Physiological-Control-to-Enhance-Game-Interaction.png},
Keywords = {affective computing,affective gaming,biofeedback,entertainment,games,physiological input,psychophysiology},
MendeleyTags = {affective computing,affective gaming,biofeedback,entertainment,games,physiological input,psychophysiology},
Pages = {103-112},
Publisher = {ACM},
Title = {Biofeedback Game Design: Using Direct and Indirect Physiological Control to Enhance Game Interaction},
Url = {https://hcigames.com/download/biofeedback-game-design-using-direct-and-indirect-physiological-control-to-enhance-game-interaction},
Year = {2011},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Biofeedback-Game-Design-Using-Direct-and-Indirect-Physiological-Control-to-Enhance-Game-Interaction.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/1978942.1978958}}

Prior work on physiological game interaction has focused on dynamically adapting games using physiological sensors. In this paper, we propose a classification of direct and indirect physiological sensor input to augment traditional game control. To find out which sensors work best for which game mechanics, we conducted a mixed-methods study using different sensor mappings. Our results show participants have a preference for direct physiological control in games. This has two major design implications for physiologically controlled games: (1) Direct physiological sensors should be mapped intuitively to reflect an action in the virtual world; (2) Indirect physiological input is best used as a dramatic device in games to influence features altering the game world.

Brain and Body Interfaces: Designing for Meaningful Interaction

@inproceedings{fairclough2011brain,
Abstract = {The brain and body provide a wealth of information about the physiological, cognitive and emotional state of the user. There is increased opportunity to use these data in computerised systems as forms of input control. As entry level physiological sensors become more widespread, physiological interfaces are liable to become more pervasive in our society (e.g., through mobile phones). While these signals offer new and exciting mechanisms for the control of interactive systems, the issue of whether these physiological interfaces are appropriate for application and offer the user a meaningful level of interaction remains relatively unexplored. This workshop sets out to bring together researchers working in the field of psychophysiological interaction to discuss the issue of how to design physiological interactions that are meaningful for users.},
Address = {Vancouver, BC, Canada},
Author = {S. H. Fairclough, K. Gilleade, L. E. Nacke, and R. L. Mandryk},
Booktitle = {Proceedings of chi ea 2011},
Doi = {10.1145/1979742.1979591},
Img = {http://hcigames.com/wp-content/uploads/2015/05/Brain-and-Body-Interfaces-Designing-for-Meaningful-Interaction.png},
Organization = {ACM},
Pages = {65-68},
Publisher = {ACM},
Title = {Brain and Body Interfaces: Designing for Meaningful Interaction},
Url = {https://hcigames.com/download/brain-and-body-interfaces-designing-for-meaningful-interaction},
Year = {2011},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Brain-and-Body-Interfaces-Designing-for-Meaningful-Interaction.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/1979742.1979591}}

The brain and body provide a wealth of information about the physiological, cognitive and emotional state of the user. There is increased opportunity to use these data in computerised systems as forms of input control. As entry level physiological sensors become more widespread, physiological interfaces are liable to become more pervasive in our society (e.g., through mobile phones). While these signals offer new and exciting mechanisms for the control of interactive systems, the issue of whether these physiological interfaces are appropriate for application and offer the user a meaningful level of interaction remains relatively unexplored. This workshop sets out to bring together researchers working in the field of psychophysiological interaction to discuss the issue of how to design physiological interactions that are meaningful for users.

BrainHex: Preliminary Results from a Neurobiological Gamer Typology Survey

@incollection{nacke2011brainhex,
Abstract = {This paper briefly presents a player satisfaction model called BrainHex, which was based on insights from neurobiological findings as well as the results from earlier demographic game design models (DGD1 and DGD2). The model presents seven different archetypes of players: Seeker, Survivor, Daredevil, Mastermind, Conqueror, Socialiser, and Achiever. We explain how each of these player archetypes relates to older player typologies (such as Myers-Briggs), and how each archetype characterizes a specific playing style. We conducted a survey among more than 50,000 players using the BrainHex model as a personality type motivator to gather and compare demographic data to the different BrainHex archetypes. We discuss some results from this survey with a focus on psychometric orientation of respondents, to establish relationships between personality types and BrainHex archetypes.},
Address = {Vancouver, BC, Canada},
Author = {L. E. Nacke, C. Bateman, and R. L. Mandryk},
Booktitle = {Proceedings of icec 2011},
Doi = {10.1007/978-3-642-24500-8_31},
Pages = {288-293},
Publisher = {Springer Berlin Heidelberg},
Title = {BrainHex: Preliminary Results from a Neurobiological Gamer Typology Survey},
Url = {https://hcigames.com/download/brainHex-preliminary-results-from-a-neurobiological-gamer-typology-survey},
Year = {2011},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/BrainHex-A-Neurobiological-Gamer-Typology-Survey.pdf},
BdskUrl2 = {http://dx.doi.org/10.1007/978-3-642-24500-8%5C_31}}

This paper briefly presents a player satisfaction model called BrainHex, which was based on insights from neurobiological findings as well as the results from earlier demographic game design models (DGD1 and DGD2). The model presents seven different archetypes of players: Seeker, Survivor, Daredevil, Mastermind, Conqueror, Socialiser, and Achiever. We explain how each of these player archetypes relates to older player typologies (such as Myers-Briggs), and how each archetype characterizes a specific playing style. We conducted a survey among more than 50,000 players using the BrainHex model as a personality type motivator to gather and compare demographic data to the different BrainHex archetypes. We discuss some results from this survey with a focus on psychometric orientation of respondents, to establish relationships between personality types and BrainHex archetypes.

Calibration Games : Making Calibration Tasks Enjoyable by Adding Motivating Game Elements

@inproceedings{Flatlaetal2011,
Abstract = {Interactive systems often require calibration to ensure that input and output are optimally configured. Without calibration, user performance can degrade (e.g., if an input device is not adjusted for the user's abilities), errors can increase (e.g., if color spaces are not matched), and some interactions may not be possible (e.g., use of an eye tracker). The value of calibration is often lost, however, because many calibration processes are tedious and unenjoyable, and many users avoid them altogether. To address this problem, we propose calibration games that gather calibration data in an engaging and entertaining manner. To facilitate the creation of calibration games, we present design guidelines that map common types of calibration to core tasks, and then to well-known game mechanics. To evaluate the approach, we developed three calibration games and compared them to standard procedures. Users found the game versions significantly more enjoyable than regular calibration procedures, without compromising the quality of the data. Calibration games are a novel way to motivate users to carry out calibrations, thereby improving the performance and accuracy of many human-computer systems.},
Address = {Santa Barbara, CA, United States},
Author = {D. R. Flatla, C. Gutwin, L. E. Nacke, S. Bateman, and R. L. Mandryk},
Booktitle = {Proceedings of acm uist 2011},
Doi = {10.1145/2047196.2047248},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Calibration-Games-Making-Calibration-Tasks-Enjoyable-by-Adding-Motivating-Game-Elements.png},
Isbn = {9781450307161},
Keywords = {calibration,computer games,game design,gamification,gaming,modeling,motivation,system},
MendeleyTags = {calibration,gamification,gaming,modeling,motivation,system},
Pages = {403-412},
Publisher = {ACM},
Title = {Calibration Games : Making Calibration Tasks Enjoyable by Adding Motivating Game Elements},
Url = {https://hcigames.com/download/calibration-games-making-calibration-tasks-enjoyable-by-adding-motivating-game-elements},
Year = {2011},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Calibration-Games-Making-Calibration-Tasks-Enjoyable-by-Adding-Motivating-Game-Elements.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/2047196.2047248}}

Interactive systems often require calibration to ensure that input and output are optimally configured. Without calibration, user performance can degrade (e.g., if an input device is not adjusted for the user's abilities), errors can increase (e.g., if color spaces are not matched), and some interactions may not be possible (e.g., use of an eye tracker). The value of calibration is often lost, however, because many calibration processes are tedious and unenjoyable, and many users avoid them altogether. To address this problem, we propose calibration games that gather calibration data in an engaging and entertaining manner. To facilitate the creation of calibration games, we present design guidelines that map common types of calibration to core tasks, and then to well-known game mechanics. To evaluate the approach, we developed three calibration games and compared them to standard procedures. Users found the game versions significantly more enjoyable than regular calibration procedures, without compromising the quality of the data. Calibration games are a novel way to motivate users to carry out calibrations, thereby improving the performance and accuracy of many human-computer systems.

Developing a Triangulation System for Digital Game Events, Observational Video, and Psychophysiological Data to Study Emotional Responses to a Virtual Character

@article{matias2011developing,
Abstract = {Game researchers are currently lacking comprehensive data analysis tools that triangulate game events, event-related survey data, and psychophysiological data. Such a tool would allow a comprehensive analysis of player engagement in digital games. The development of this tool was motivated by an experimental psychology study that asked whether emotional reactions to congruent and incongruent emotional stimuli within an intrinsically motivated game task are the same as within the traditional experimental picture-viewing paradigm. To address the needs of our study, we used the Source SDK (Valve Corporation) for creating a system that automates event logging, video management psychophysiological data markup. The system also allowed recording of self-report measures at individual play events without interrupting the game activity.},
Author = {J. M. Kivikangas, L. E. Nacke, and N. Ravaja},
Doi = {10.1016/j.entcom.2011.03.006},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Developing-a-Triangulation-System-for-Digital-Game-Events-Observational-Video-and-Psychophysiological-Data-to-Study-Emotional-Responses-to-a-Virtual-Character.png},
Issn = {18759521},
Journal = {Entertainment computing},
Number = {1},
Pages = {11-16},
Publisher = {Elsevier},
Title = {Developing a Triangulation System for Digital Game Events, Observational Video, and Psychophysiological Data to Study Emotional Responses to a Virtual Character},
Url = {https://hcigames.com/download/developing-a-triangulation-system-for-digital-game-events-observational-video-and-psychophysiological-data-to-study-emotional-responses-to-a-virtual-character},
Volume = {2},
Year = {2011},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Developing-a-Triangulation-System-for-Digital-Game-Events-Observational-Video-and-Psychophysiological-Data-to-Study-Emotional-Responses-to-a-Virtual-Character.pdf},
BdskUrl2 = {http://dx.doi.org/10.1016/j.entcom.2011.03.006}}

Game researchers are currently lacking comprehensive data analysis tools that triangulate game events, event-related survey data, and psychophysiological data. Such a tool would allow a comprehensive analysis of player engagement in digital games. The development of this tool was motivated by an experimental psychology study that asked whether emotional reactions to congruent and incongruent emotional stimuli within an intrinsically motivated game task are the same as within the traditional experimental picture-viewing paradigm. To address the needs of our study, we used the Source SDK (Valve Corporation) for creating a system that automates event logging, video management psychophysiological data markup. The system also allowed recording of self-report measures at individual play events without interrupting the game activity.

Directions in Physiological Game Evaluation and Interaction

@inproceedings{nacke2011directions,
Abstract = {Physiological sensors are becoming cheaper and more available to game players. This has led to their increased usage in game research and the game industry, where applications range from biofeedback games to design evaluation tools supporting game user researchers in creating more engaging gameplay experiences. This paper gives a brief overview of these current directions of game industry and research threads.},
Address = {Vancouver, BC, Canada},
Author = {L. E. Nacke},
Booktitle = {Proceedings of the bbi workshop at chi 2011},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Directions-in-Physiological-Game-Evaluation-and-Interaction.png},
Title = {Directions in Physiological Game Evaluation and Interaction},
Url = {https://hcigames.com/download/directions-in-physiological-game-evaluation-and-interaction},
Year = {2011},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Directions-in-Physiological-Game-Evaluation-and-Interaction.pdf}}

Physiological sensors are becoming cheaper and more available to game players. This has led to their increased usage in game research and the game industry, where applications range from biofeedback games to design evaluation tools supporting game user researchers in creating more engaging gameplay experiences. This paper gives a brief overview of these current directions of game industry and research threads.

From Game Design Elements to Gamefulness: Defining "Gamification"

@inproceedings{deterding2011game,
Abstract = {Recent years have seen a rapid proliferation of mass-market consumer software that takes inspiration from video games. Usually summarized as "gamification", this trend connects to a sizeable body of existing concepts and research in human-computer interaction and game studies, such as serious games, pervasive games, alternate reality games, or playful design. However, it is not clear how "gamification" relates to these, whether it denotes a novel phenomenon, and how to define it. Thus, in this paper we investigate "gamification" and the historical origins of the term in relation to precursors and similar concepts. It is suggested that "gamified" applications provide insight into novel, gameful phenomena complementary to playful phenomena. Based on our research, we propose a definition of "gamification" as the use of game design elements in non-game contexts.},
Address = {Tampere, Finland},
Author = {S. Deterding, D. Dixon, R. Khaled, and L. E. Nacke},
Booktitle = {Proceedings of mindtrek 2011},
Doi = {10.1145/2181037.2181040},
Img = {http://hcigames.com/wp-content/uploads/2015/05/From-Game-Design-Elements-to-Gamefulness-Defining-Gamification.png},
Organization = {ACM},
Pages = {9-15},
Publisher = {ACM},
Title = {From Game Design Elements to Gamefulness: Defining "Gamification"},
Url = {https://hcigames.com/download/from-game-design-elements-to-gamefulness-defining-%E2%80%9Cgamification%E2%80%9D},
Year = {2011},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/02/From-Game-Design-Elements-to-Gamefulness-Defining-Gamification.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/2181037.2181040}}

Recent years have seen a rapid proliferation of mass-market consumer software that takes inspiration from video games. Usually summarized as "gamification", this trend connects to a sizeable body of existing concepts and research in human-computer interaction and game studies, such as serious games, pervasive games, alternate reality games, or playful design. However, it is not clear how "gamification" relates to these, whether it denotes a novel phenomenon, and how to define it. Thus, in this paper we investigate "gamification" and the historical origins of the term in relation to precursors and similar concepts. It is suggested that "gamified" applications provide insight into novel, gameful phenomena complementary to playful phenomena. Based on our research, we propose a definition of "gamification" as the use of game design elements in non-game contexts.

Gamification: Toward a Definition

@article{deterding2011gamificationa,
Abstract = {This paper proposes a working definition of the term gamification as the use of game design elements in non-game contexts. This definition is related to similar concepts such as serious games, serious gaming, playful interaction, and game-based technologies.},
Address = {Vancouver, BC, Canada},
Author = {S. Deterding, R. Khaled, L. E. Nacke, and D. Dixon},
Img = {http://hcigames.com/wp-content/uploads/2015/05/Gamification-Toward-a-Definition.png},
Journal = {Proceedings of chi ea 2011},
Title = {Gamification: Toward a Definition},
Url = {https://hcigames.com/download/gamification-toward-a-definition},
Year = {2011},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Gamification-Toward-a-Definition.pdf}}

This paper proposes a working definition of the term gamification as the use of game design elements in non-game contexts. This definition is related to similar concepts such as serious games, serious gaming, playful interaction, and game-based technologies.

Gamification: Using Game Design Elements in Non-Gaming Contexts

@inproceedings{deterding2011gamificationi,
Abstract = {"Gamification" is an informal umbrella term for the use of video game elements in non-gaming systems to improve user experience (UX) and user engagement. The recent introduction of 'gamified' applications to large audiences promises new additions to the existing rich and diverse research on the heuristics, design patterns and dynamics of games and the positive UX they provide. However, what is lacking for a next step forward is the integration of this precise diversity of research endeavors. Therefore, this workshop brings together practitioners and researchers to develop a shared understanding of existing approaches and findings around the gamification of information systems, and identify key synergies, opportunities, and questions for future research.},
Address = {Vancouver, BC, Canada},
Author = {S. Deterding, M. Sicart, L. E. Nacke, K. O'Hara, and D. Dixon},
Booktitle = {Proceedings of chi ea 2011},
Doi = {10.1145/1979742.1979575},
Organization = {ACM},
Pages = {2425-2428},
Publisher = {ACM},
Title = {Gamification: Using Game Design Elements in Non-Gaming Contexts},
Url = {https://hcigames.com/download/gamification-using-game-design-elements-in-non-gaming-contexts},
Year = {2011},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Gamification-Using-Game-Design-Elements-in-Non-Gaming-Contexts.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/1979742.1979575}}

"Gamification" is an informal umbrella term for the use of video game elements in non-gaming systems to improve user experience (UX) and user engagement. The recent introduction of 'gamified' applications to large audiences promises new additions to the existing rich and diverse research on the heuristics, design patterns and dynamics of games and the positive UX they provide. However, what is lacking for a next step forward is the integration of this precise diversity of research endeavors. Therefore, this workshop brings together practitioners and researchers to develop a shared understanding of existing approaches and findings around the gamification of information systems, and identify key synergies, opportunities, and questions for future research.

Influencing Experience: The Effects of Reading Game Reviews on Player Experience

@incollection{livingston2011influencing,
Abstract = {Game reviews are used by game developers for making business decisions and measuring the success of a title, and have been shown to affect player perception of game quality. We conducted a study where players read positive or negative reviews of a game before playing, and show that the valence of review text affected game ratings and that these differences could not be explained by mediating changes in mood. Although we show predictable changes in player experience over the course of the study (measured objectively through physiological sensors), there were no objective differences in experience depending on review valence. Our results suggest that reading reviews does not directly affect play experience, but rather is a post-play cognitive rationalization of the experience with the content of the review. Our results are important for understanding player experience and to the game industry where reviews and user forums affect a game's commercial success.},
Address = {Vancouver, BC, Canada},
Author = {I. J. Livingston, L. E. Nacke, and R. L. Mandryk},
Booktitle = {Proceedings of icec 2011},
Doi = {10.1007/978-3-642-24500-8_10},
Pages = {89-100},
Publisher = {Springer Berlin Heidelberg},
Title = {Influencing Experience: The Effects of Reading Game Reviews on Player Experience},
Url = {http://dx.doi.org/10.1007/978-3-642-24500-8_10},
Year = {2011},
BdskUrl1 = {http://dx.doi.org/10.1007/978-3-642-24500-8%5C_10}}

Game reviews are used by game developers for making business decisions and measuring the success of a title, and have been shown to affect player perception of game quality. We conducted a study where players read positive or negative reviews of a game before playing, and show that the valence of review text affected game ratings and that these differences could not be explained by mediating changes in mood. Although we show predictable changes in player experience over the course of the study (measured objectively through physiological sensors), there were no objective differences in experience depending on review valence. Our results suggest that reading reviews does not directly affect play experience, but rather is a post-play cognitive rationalization of the experience with the content of the review. Our results are important for understanding player experience and to the game industry where reviews and user forums affect a game's commercial success.

LAIF: A Logging and Interaction Framework for Gaze-Based Interfaces in Virtual Entertainment Environments

@article{nacke2011laif,
Abstract = {Eye tracking is starting to be used for evaluation and interaction in virtual environments. Especially digital games can benefit from an integrated approach, using eye tracking technology for analysis and interaction. One benefit is faster development of gaze interaction games, which can be automatically evaluated in iterative development cycles. For this purpose, we present a framework of programming libraries that enables rapid game development and gameplay analysis within an experimental research environment. The framework presented here is extensible for different kinds of logging (e.g., psychophysiological and in-game behavioral data) and facilitates studies using eye-tracking technology in digital entertainment environments. An experimental study using gaze-only interaction in a digital game is presented and highlights the framework's capacity to create games and evaluate novel entertainment interfaces.},
Author = {L. E. Nacke, S. Stellmach, D. Sasse, J. Niesenhaus, and R. Dachselt},
Doi = {10.1016/j.entcom.2010.09.004},
Img = {http://hcigames.com/wp-content/uploads/2015/02/LAIF-A-Logging-and-Interaction-Framework-for-Gaze-Based-Interfaces-in-Virtual-Entertainment-Environments.png},
Journal = {Entertainment computing},
Keywords = {digital games,eye tracking,gameplay logging,interactive techniques,software tool,xna},
Number = {4},
Pages = {265-273},
Publisher = {Elsevier},
Title = {LAIF: A Logging and Interaction Framework for Gaze-Based Interfaces in Virtual Entertainment Environments},
Url = {https://hcigames.com/download/laif-a-logging-and-interaction-framework-for-gaze-based-interfaces-in-virtual-entertainment-environments},
Volume = {2},
Year = {2011},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/LAIF-A-Logging-and-Interaction-Framework-for-Gaze-Based-Interfaces-in-Virtual-Entertainment-Environments.pdf},
BdskUrl2 = {http://dx.doi.org/10.1016/j.entcom.2010.09.004}}

Eye tracking is starting to be used for evaluation and interaction in virtual environments. Especially digital games can benefit from an integrated approach, using eye tracking technology for analysis and interaction. One benefit is faster development of gaze interaction games, which can be automatically evaluated in iterative development cycles. For this purpose, we present a framework of programming libraries that enables rapid game development and gameplay analysis within an experimental research environment. The framework presented here is extensible for different kinds of logging (e.g., psychophysiological and in-game behavioral data) and facilitates studies using eye-tracking technology in digital entertainment environments. An experimental study using gaze-only interaction in a digital game is presented and highlights the framework's capacity to create games and evaluate novel entertainment interfaces.

Player Typology in Theory and Practice

@article{bateman2011player,
Abstract = {Player satisfaction modeling depends in part upon quantitative or qualitative typologies of playing preferences, although such approaches require scrutiny. Examination of psychometric typologies reveal that type theories have---except in rare cases---proven inadequate and have made way for alternative trait theories. This suggests any future player typology that will be sufficiently robust will need foundations in the form of a trait theory of playing preferences. This paper tracks the development of a sequence of player typologies developing from psychometric type theory roots towards an independently validated trait theory of play, albeit one yet to be fully developed. Statistical analysis of the results of one survey in this lineage is presented, along with a discussion of theoretical and practical ways in which the surveys and their implied typological instruments have evolved.},
Address = {Utrecht, The Netherlands},
Author = {C. Bateman, R. Lowenhaupt, and L. E. Nacke},
Journal = {Proceedings of digra 2011},
Title = {Player Typology in Theory and Practice},
Url = {https://hcigames.com/download/player-typology-in-theory-and-practice},
Year = {2011},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Player-Typology-in-Theory-and-Practice.pdf}}

Player satisfaction modeling depends in part upon quantitative or qualitative typologies of playing preferences, although such approaches require scrutiny. Examination of psychometric typologies reveal that type theories have---except in rare cases---proven inadequate and have made way for alternative trait theories. This suggests any future player typology that will be sufficiently robust will need foundations in the form of a trait theory of playing preferences. This paper tracks the development of a sequence of player typologies developing from psychometric type theory roots towards an independently validated trait theory of play, albeit one yet to be fully developed. Statistical analysis of the results of one survey in this lineage is presented, along with a discussion of theoretical and practical ways in which the surveys and their implied typological instruments have evolved.

Player-Game Interaction Through Affective Sound

@article{nacke2011player,
Abstract = {This chapter treats computer game playing as an affective activity, largely guided by the audio-visual aesthetics of game content (of which, here, we concentrate on the role of sound) and the pleasure of gameplay. To understand the aesthetic impact of game sound on player experience, definitions of emotions are briefly discussed and framed in the game context. This leads to an introduction of empirical methods for assessing physiological and psychological effects of play, such as the affective impact of sonic player-game interaction. The psychological methodology presented is largely based on subjective interpretation of experience, while psychophysiological methodology is based on measurable bodily changes, such as context-dependent, physiological experience. As a means to illustrate both the potential and the difficulties inherent in such methodology we discuss the results of some experiments that investigate game sound and music effects and, finally, we close with a discussion of possible research directions based on a speculative assessment of the future of player-game interaction through affective sound.},
Address = {Hershey, PA, United States},
Author = {L. E. Nacke and M. Grimshaw},
Chapter = {13},
Doi = {10.4018/978-1-61692-828-5.ch013},
Editor = {M. N. Grimshaw},
Isbn = {161692828X},
Journal = {Game sound technology and player interaction: concepts and developments},
Pages = {264-285},
Publisher = {IGI Global},
Title = {Player-Game Interaction Through Affective Sound},
Url = {http://www.igi-global.com/chapter/game-sound-technology-player-interaction/46796},
Year = {2011},
BdskUrl1 = {http://www.igi-global.com/chapter/game-sound-technology-player-interaction/46796},
BdskUrl2 = {http://dx.doi.org/10.4018/978-1-61692-828-5.ch013}}

This chapter treats computer game playing as an affective activity, largely guided by the audio-visual aesthetics of game content (of which, here, we concentrate on the role of sound) and the pleasure of gameplay. To understand the aesthetic impact of game sound on player experience, definitions of emotions are briefly discussed and framed in the game context. This leads to an introduction of empirical methods for assessing physiological and psychological effects of play, such as the affective impact of sonic player-game interaction. The psychological methodology presented is largely based on subjective interpretation of experience, while psychophysiological methodology is based on measurable bodily changes, such as context-dependent, physiological experience. As a means to illustrate both the potential and the difficulties inherent in such methodology we discuss the results of some experiments that investigate game sound and music effects and, finally, we close with a discussion of possible research directions based on a speculative assessment of the future of player-game interaction through affective sound.

The Impact of Negative Game Reviews and User Comments on Player Experience

@inproceedings{livingston2011impact,
Abstract = {Game reviews and player ratings have an effect on the commercial success of games. They are used extensively by game developers to gauge the success of their titles and by potential buyers to make more informed purchase decisions. However, their potential influence on player experience remains uncertain. We investigated how game reviews and user comments influence players' affective states and experiences during game play. We found that both professional reviews and user comments (especially the negative comments) affected experience measured through game ratings, and that this effect was not mediated by changes in players' moods. Our results are important to the game industry because of the meaningful negative effect that user and critic comments can have on individual player experience and the resulting commercial success of a game.},
Address = {Vancouver, BC, Canada},
Author = {I. J. Livingston, L. E. Nacke, and R. L. Mandryk},
Booktitle = {Proceedings of acm siggraph 2011},
Doi = {10.1145/2037692.2037697},
Organization = {ACM},
Pages = {4},
Publisher = {ACM},
Title = {The Impact of Negative Game Reviews and User Comments on Player Experience},
Url = {https://hcigames.com/download/the-impact-of-negative-game-reviews-and-user-comments-on-player-experience},
Year = {2011},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/The-Impact-of-Negative-Game-Reviews-and-User-Comments-on-Player-Experience.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/2037692.2037697}}

Game reviews and player ratings have an effect on the commercial success of games. They are used extensively by game developers to gauge the success of their titles and by potential buyers to make more informed purchase decisions. However, their potential influence on player experience remains uncertain. We investigated how game reviews and user comments influence players' affective states and experiences during game play. We found that both professional reviews and user comments (especially the negative comments) affected experience measured through game ratings, and that this effect was not mediated by changes in players' moods. Our results are important to the game industry because of the meaningful negative effect that user and critic comments can have on individual player experience and the resulting commercial success of a game.

Towards a Framework of Player Experience Research

@article{nacke2011towards,
Abstract = {Player Experience (PX), user experience in the specific context of digital games, is currently a nebulous term with no commonly accepted definition or coherent backing theory. In this paper, a brief overview of the current stateof-the-art of PX knowledge is presented, with a specific emphasis on comparing PX research with the massive amount of knowledge currently being generated about user experience in other areas of HCI, notably productivity applications. Furthermore, to outline the current gaps in the knowledge of PX and integrate current research into a unified theoretical framework, creating a shared point of reference for the decidedly multi-disciplinary PX research.},
Address = {Bordeaux, France},
Author = {L. E. Nacke and A. Drachen},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Towards-a-Framework-of-Player-Experience-Research.png},
Journal = {Proceedings of the international workshop on evaluating player experience in games at fdg 2011},
Title = {Towards a Framework of Player Experience Research},
Url = {https://hcigames.com/download/towards-a-framework-of-player-experience-research},
Year = {2011},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Towards-a-Framework-of-Player-Experience-Research.pdf}}

Player Experience (PX), user experience in the specific context of digital games, is currently a nebulous term with no commonly accepted definition or coherent backing theory. In this paper, a brief overview of the current stateof-the-art of PX knowledge is presented, with a specific emphasis on comparing PX research with the massive amount of knowledge currently being generated about user experience in other areas of HCI, notably productivity applications. Furthermore, to outline the current gaps in the knowledge of PX and integrate current research into a unified theoretical framework, creating a shared point of reference for the decidedly multi-disciplinary PX research.

Year 2010

3D Attentional Maps: Aggregated Gaze Visualizations in Three-Dimensional Virtual Environments

@inproceedings{stellmach20103d,
Abstract = {Gaze visualizations hold the potential to facilitate usability studies of interactive systems. However, visual gaze analysis in three- dimensional virtual environments still lacks methods and techniques for aggregating attentional representations. We propose three novel gaze visualizations for the application in such environments: projected, object-based, and surface-based attentional maps. These techniques provide an overview of how visual attention is distributed across a scene, among different models, and across a model's surface. Two user studies conducted among eye tracking and visualization experts approve the high value of these techniques for the fast evaluation of eye tracking studies in virtual environments.},
Address = {Rome, Italy},
Author = {S. Stellmach, L. E. Nacke, and R. Dachselt},
Booktitle = {Proceedings of avi 2010},
Doi = {10.1145/1842993.1843058},
Img = {http://hcigames.com/wp-content/uploads/2015/02/3D-Attentional-Maps-Aggregated-Gaze-Visualizations-in-Three-Dimensional-Virtual-Environments.png},
Organization = {ACM},
Pages = {345-348},
Publisher = {ACM},
Title = {3D Attentional Maps: Aggregated Gaze Visualizations in Three-Dimensional Virtual Environments},
Url = {https://hcigames.com/download/3d-attentional-maps-aggregated-gaze-visualizations-in-three-dimensional-virtual-environments},
Year = {2010},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/3D-Attentional-Maps-Aggregated-Gaze-Visualizations-in-Three-Dimensional-Virtual-Environments.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/1842993.1843058}}

Gaze visualizations hold the potential to facilitate usability studies of interactive systems. However, visual gaze analysis in three- dimensional virtual environments still lacks methods and techniques for aggregating attentional representations. We propose three novel gaze visualizations for the application in such environments: projected, object-based, and surface-based attentional maps. These techniques provide an overview of how visual attention is distributed across a scene, among different models, and across a model's surface. Two user studies conducted among eye tracking and visualization experts approve the high value of these techniques for the fast evaluation of eye tracking studies in virtual environments.

Advanced Gaze Visualizations for Three-Dimensional Virtual Environments

@inproceedings{StellmachNackeDachseltETRA2010,
Abstract = {Gaze visualizations represent an effective way for gaining fast insights into eye tracking data. Current approaches do not adequately support eye tracking studies for three-dimensional (3D) virtual environments. Hence, we propose a set of advanced gaze visualization techniques for supporting gaze behavior analysis in such environments. Similar to commonly used gaze visualizations for two-dimensional stimuli (e.g., images and websites), we contribute advanced 3D scan paths and 3D attentional maps. In addition, we introduce a models of interest timeline depicting viewed models, which can be used for displaying scan paths in a selected time segment. A prototype toolkit is also discussed which combines an implementation of our proposed techniques. Their potential for facilitating eye tracking studies in virtual environments was supported by a user study among eye tracking and visualization experts.},
Address = {Austin, TX, United States},
Author = {S. Stellmach, L. E. Nacke, and R. Dachselt},
Booktitle = {Proceedings of etra 2010},
Doi = {10.1145/1743666.1743693},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Advanced-Gaze-Visualizations-for-Three-Dimensional-Virtual-Environments.png},
Isbn = {978-1-60558-994-7},
Keywords = {3d,3dve,attention,attentional maps,cve,eye movements,eye tracking,eyetracker,eyetracking,game,gaze,gaze visualizations,gaze_behavior,scan paths,sveeter,three-dimensional,ve,virtual environments,virtual_environment,visual,visual_attention,visualization,visualization_experts,visualization_techniques,visualizations,xna},
MendeleyTags = {3d,3dve,attention,cve,eyetracker,eyetracking,game,gaze,gaze_behavior,sveeter,ve,virtual_environment,visual,visual_attention,visualization,visualization_experts,visualization_techniques,visualizations,xna},
Pages = {109-112},
Publisher = {ACM},
Title = {Advanced Gaze Visualizations for Three-Dimensional Virtual Environments},
Type = {Conference proceedings (article)},
Url = {https://hcigames.com/download/advanced-gaze-visualizations-for-three-dimensional-virtual-environments},
Year = {2010},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Advanced-Gaze-Visualizations-for-Three-Dimensional-Virtual-Environments.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/1743666.1743693}}

Gaze visualizations represent an effective way for gaining fast insights into eye tracking data. Current approaches do not adequately support eye tracking studies for three-dimensional (3D) virtual environments. Hence, we propose a set of advanced gaze visualization techniques for supporting gaze behavior analysis in such environments. Similar to commonly used gaze visualizations for two-dimensional stimuli (e.g., images and websites), we contribute advanced 3D scan paths and 3D attentional maps. In addition, we introduce a models of interest timeline depicting viewed models, which can be used for displaying scan paths in a selected time segment. A prototype toolkit is also discussed which combines an implementation of our proposed techniques. Their potential for facilitating eye tracking studies in virtual environments was supported by a user study among eye tracking and visualization experts.

BioS-Play: Workshop on Multiuser and Social Biosignal Adaptive Games and Playful Applications

@article{kuikkaniemi2010bios,
Abstract = {BioS-Play is a workshop targeted to explore the focused domain of biosignal adaptive games and playful application in a multiuser or social context. Using biosignal instrumentation is an established process in medical domains and experimental psychology. During recent years there have been many efforts in industry and research to develop applications, games and various kinds of interfaces which use biosignal analysis in real time. However, most of these applications are single user setups. According to our earlier work we have realized that there is great potential in developing biosignal adaptive applications for multiuser and social scenarios. The applications we have been developing have been either games or playful applications. Games have unique characteristics, which work well for biosignal augmentation. In addition, games can be used in a laboratory setup for exploring the social biosignal interaction design elements overall in a structured and efficient way. Ultimately, we believe that combination of biosignal adaptation, social and multiuser context, and playful interaction is useful for various kinds of situations and can elicit never before- seen experiences. The workshop organizers have several years of experience in researching games, psychophysiology, multiuser application development, and combination of them all. The workshop will be organized with a help of the Presemo presentation environment, which is also a biosignal, adaptive, social, and playful system. The workshop aims at creating new collaborations by facilitating networking of interested researchers and discussing research future research ventures in this domain, distributing knowledge among participants and developing a roadmap related to the future development in this field. Workshop participants are expected to show interest in developing biosignal prototypes or running experiments with experimental psychophysiological systems. In addition to game researchers and individuals with experience in analyzing and working with biosignals, we hope that also people with experience or strong interest in multiuser applications and social interaction will join the session.},
Address = {Leuven, Belgium},
Author = {K. Kuikkaniemi, M. Turpeinen, H. J. Korhonen, N. Ravaja, G. Chanel, and L. E. Nacke},
Journal = {Proceedings of a workshop at fun and games 2010},
Publisher = {ACM},
Title = {BioS-Play: Workshop on Multiuser and Social Biosignal Adaptive Games and Playful Applications},
Url = {https://hcigames.com/download/bioS-play-workshop-on-multiuser-and-social-biosignal-adaptive-games-and-playful-applications},
Year = {2010},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/BioS-Play-Workshop-on-Multiuser-and-Social-Biosignal-Adaptive-Games-and-Playful-Applications.pdf}}

BioS-Play is a workshop targeted to explore the focused domain of biosignal adaptive games and playful application in a multiuser or social context. Using biosignal instrumentation is an established process in medical domains and experimental psychology. During recent years there have been many efforts in industry and research to develop applications, games and various kinds of interfaces which use biosignal analysis in real time. However, most of these applications are single user setups. According to our earlier work we have realized that there is great potential in developing biosignal adaptive applications for multiuser and social scenarios. The applications we have been developing have been either games or playful applications. Games have unique characteristics, which work well for biosignal augmentation. In addition, games can be used in a laboratory setup for exploring the social biosignal interaction design elements overall in a structured and efficient way. Ultimately, we believe that combination of biosignal adaptation, social and multiuser context, and playful interaction is useful for various kinds of situations and can elicit never before- seen experiences. The workshop organizers have several years of experience in researching games, psychophysiology, multiuser application development, and combination of them all. The workshop will be organized with a help of the Presemo presentation environment, which is also a biosignal, adaptive, social, and playful system. The workshop aims at creating new collaborations by facilitating networking of interested researchers and discussing research future research ventures in this domain, distributing knowledge among participants and developing a roadmap related to the future development in this field. Workshop participants are expected to show interest in developing biosignal prototypes or running experiments with experimental psychophysiological systems. In addition to game researchers and individuals with experience in analyzing and working with biosignals, we hope that also people with experience or strong interest in multiuser applications and social interaction will join the session.

Brain, Body and Bytes: Psychophysiological User Interaction

@inproceedings{GSMTNJ_CHI2010,
Abstract = {The human brain and body are prolific signal generators. Recent technologies and computing techniques allow us to measure, process and interpret these signals. We can now infer such things as cognitive and emotional states to create adaptive interactive systems and to gain an understanding of user experience. This workshop brings together researchers from the formerly separated communities of physiological computing (PC), and brain-computer interfaces (BCI) to discuss psychophysiological computing. We set out to identify key research challenges, potential global synergies, and emerging technological contributions.},
Address = {Atlanta, GA, United States},
Author = {A. Girouard, E. T. Solovey, R. L. Mandryk, D. Tan, L. E. Nacke, and R. J. K. Jacob},
Booktitle = {Proceedings of CHI EA 2010},
Doi = {10.1145/1753846.1754167},
File = {::},
Isbn = {978-1-60558-930-5},
Keywords = {affective computing,body,brain,brain-computer interfaces,bytes,hci,interaction,physiological computing,psychophysiological signals,ui},
MendeleyTags = {affective computing,body,brain,bytes,hci,interaction,physiological computing,ui},
Pages = {4433-4436},
Publisher = {ACM},
Title = {Brain, Body and Bytes: Psychophysiological User Interaction},
Type = {Conference proceedings (article)},
Url = {https://hcigames.com/download/brain-body-and-bytes-psychophysiological-user-interaction},
Year = {2010},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Brain-Body-and-Bytes-Psychophysiological-User-Interaction.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/1753846.1754167}}

The human brain and body are prolific signal generators. Recent technologies and computing techniques allow us to measure, process and interpret these signals. We can now infer such things as cognitive and emotional states to create adaptive interactive systems and to gain an understanding of user experience. This workshop brings together researchers from the formerly separated communities of physiological computing (PC), and brain-computer interfaces (BCI) to discuss psychophysiological computing. We set out to identify key research challenges, potential global synergies, and emerging technological contributions.

Bringing Digital Games to User Research and User Experience

@article{nackebringing,
Abstract = {In recent years, the gaming industry has grown up and digital games have become more complex products. With this maturity comes an increasing need for formal playtesting methods from user research and scientific methods from academia. Employing user research methods in game development, especially combined qualitative (e.g., questionnaires, interviews) and quantitative (e.g., EEG, EMG, game metrics) methods lead to a better understanding of the relationship and interactions between players and games. This panel gathers game user research industry and academic experts for discussing current methodological advancements and future challenges in playtesting, usability, playability evaluation, and general game user research.},
Address = {Duisburg, Germany},
Author = {L. E. Nacke, J. Niesenhaus, S. Engl, A. Canossa, K. Kuikkaniemi, and T. Immich},
Img = {http://hcigames.com/wp-content/uploads/2015/05/Bringing-Digital-Games-to-User-Research-and-User-Experience.png},
Journal = {Proceedings of the Entertainment Interfaces Track 2010 at Interaktive Kulturen 2010},
Title = {Bringing Digital Games to User Research and User Experience},
Url = {https://hcigames.com/download/bringing-digital-games-to-user-research-and-user-experience},
Year = {2010},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Bringing-Digital-Games-to-User-Research-and-User-Experience.pdf}}

In recent years, the gaming industry has grown up and digital games have become more complex products. With this maturity comes an increasing need for formal playtesting methods from user research and scientific methods from academia. Employing user research methods in game development, especially combined qualitative (e.g., questionnaires, interviews) and quantitative (e.g., EEG, EMG, game metrics) methods lead to a better understanding of the relationship and interactions between players and games. This panel gathers game user research industry and academic experts for discussing current methodological advancements and future challenges in playtesting, usability, playability evaluation, and general game user research.

Correlation Between Heart Rate, Electrodermal Activity and Player Experience in First-Person Shooter Games

@inproceedings{Drachen2010,
Abstract = {Psychophysiological methods are becoming more popular in game research as covert and reliable measures of affective player experience, emotions, and cognition. Since player experience is not well understood, correlations between self-reports from players and psychophysiological data may provide a quantitative understanding of this experience. Measurements of electrodermal activity (EDA) and heart rate (HR) allow making inferences about player arousal (i.e., excitement) and are easy to deploy. This paper reports a case study on HR and EDA correlations with subjective gameplay experience, testing the feasibility of these measures in commercial game development contexts. Results indicate a significant correlation (p < 0.01) between psychophysiological arousal (i.e., HR, EDA) and self-reported gameplay experience. However, the covariance between psychophysiological measures and self-reports varies between the two measures. The results are consistent across three different contemporary major commercial first-person shooter (FPS) games (Prey, Doom 3, and Bioshock).},
Address = {Los Angeles, CA, United States},
Author = {A. Drachen, L. E. Nacke, G. Yannakakis, and A. L. Pedersen},
Booktitle = {Proceedings of ACM Siggraph 2010},
Doi = {10.1145/1836135.1836143},
Editor = {R. Wainess and S. N. Spencer},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Correlation-Between-Heart-Rate-Electrodermal-Activity-and-Player-Experience-in-First-Person-Shooter-Games.png},
Keywords = {affective gaming,analysis,digital games,entertainment,fps,games,human-centered design,player experience,psychophysiology,user experience (UX),user studies,ux},
MendeleyTags = {entertainment,fps,games,player experience,ux},
Pages = {49-54},
Publisher = {ACM},
Title = {Correlation Between Heart Rate, Electrodermal Activity and Player Experience in First-Person Shooter Games},
Url = {https://hcigames.com/download/correlation-between-heart-rate-electrodermal-activity-and-player-experience-in-first-person-shooter-games},
Year = {2010},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Correlation-Between-Heart-Rate-Electrodermal-Activity-and-Player-Experience-in-First-Person-Shooter-Games.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/1836135.1836143}}

Psychophysiological methods are becoming more popular in game research as covert and reliable measures of affective player experience, emotions, and cognition. Since player experience is not well understood, correlations between self-reports from players and psychophysiological data may provide a quantitative understanding of this experience. Measurements of electrodermal activity (EDA) and heart rate (HR) allow making inferences about player arousal (i.e., excitement) and are easy to deploy. This paper reports a case study on HR and EDA correlations with subjective gameplay experience, testing the feasibility of these measures in commercial game development contexts. Results indicate a significant correlation (p < 0.01) between psychophysiological arousal (i.e., HR, EDA) and self-reported gameplay experience. However, the covariance between psychophysiological measures and self-reports varies between the two measures. The results are consistent across three different contemporary major commercial first-person shooter (FPS) games (Prey, Doom 3, and Bioshock).

Critic-Proofing: Robust Validation Through Data-Mining

@article{livingston2010critic,
Abstract = {Critic-proofing is a modified heuristic evaluation technique, specifically designed to provide a fine-grained, prioritized list of heuristic violations. The critic-proofing technique weights the severity of a problem based on the frequency that similar problems are found in similar games. The severity ratings are calculated using data collected from game reviews, and the severity assigned to a problem during the heuristic evaluation process. However, heuristic techniques have had limited adoption within the video game industry. One reason for this is the perceived lack of validity and robustness of game specific heuristic principles. In this paper, we introduce and outline a new data- mining project designed to validate game-specific heuristic techniques, especially the critic-proofing technique by using the popular game-review aggregation website Metacritic.},
Address = {Leuven, Belgium},
Author = {I. J. Livingston, L. E. Nacke, and R. L. Mandryk},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Critic-Proofing-Robust-Validation-Through-Data-Mining.png},
Journal = {Proceedings of Fun and Games 2010},
Pages = {81-94},
Title = {Critic-Proofing: Robust Validation Through Data-Mining},
Url = {https://hcigames.com/download/critic-proofing-robust-validation-through-data-mining},
Year = {2010},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Critic-Proofing-Robust-Validation-Through-Data-Mining.pdf}}

Critic-proofing is a modified heuristic evaluation technique, specifically designed to provide a fine-grained, prioritized list of heuristic violations. The critic-proofing technique weights the severity of a problem based on the frequency that similar problems are found in similar games. The severity ratings are calculated using data collected from game reviews, and the severity assigned to a problem during the heuristic evaluation process. However, heuristic techniques have had limited adoption within the video game industry. One reason for this is the perceived lack of validity and robustness of game specific heuristic principles. In this paper, we introduce and outline a new data- mining project designed to validate game-specific heuristic techniques, especially the critic-proofing technique by using the popular game-review aggregation website Metacritic.

Designing Affective Games with Physiological Input

@article{nacke2010designing,
Abstract = {With the advent of new game controllers, traditional input mechanisms for games have changed to include gestural interfaces and camera recognition techniques, which are being further explored with the likes of Sony's PlayStation Move and Microsoft's Kinect. Soon these techniques will include affective input to control game interaction and mechanics. Thus, it is important to explore which game designs work best with which affective input technologies, giving special regard to direct and indirect methods. In this paper, we discuss some affective measurement techniques and development ideas for using these as control mechanisms for affective game design using psychophysiological input.},
Address = {Leuven, Belgium},
Author = {L. E. Nacke and R. L. Mandryk},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Designing-Affective-Games-with-Physiological-Input.png},
Journal = {Proceedings of Fun and Games BiosPlay Workshop 2010},
Publisher = {ACM},
Title = {Designing Affective Games with Physiological Input},
Url = {https://hcigames.com/download/designing-affective-games-with-physiological-input},
Year = {2010},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Designing-Affective-Games-with-Physiological-Input.pdf}}

With the advent of new game controllers, traditional input mechanisms for games have changed to include gestural interfaces and camera recognition techniques, which are being further explored with the likes of Sony's PlayStation Move and Microsoft's Kinect. Soon these techniques will include affective input to control game interaction and mechanics. Thus, it is important to explore which game designs work best with which affective input technologies, giving special regard to direct and indirect methods. In this paper, we discuss some affective measurement techniques and development ideas for using these as control mechanisms for affective game design using psychophysiological input.

Electroencephalographic Assessment of Player Experience: A Pilot Study in Affective Ludology

@article{NackeSG2010,
Abstract = {Psychophysiological methods, such as electroencephalography (EEG), provide reliable high-resolution measurements of affective player experience. In this article, the authors present a psychophysiological pilot study and its initial results to solidify a research approach they call affective ludology, a research area concerned with the physiological measurement of affective responses to player-game interaction. The study investigates the impact of level design on brainwave activity measured with EEG and on player experience measured with questionnaires. The goal of the study was to investigate cognition, emotion, and player behavior from a psychological perspective. For this purpose, a methodology for assessing gameplay experience with subjective and objective measures was developed extending prior work in physiological measurements of affect in digital gameplay. The authors report the result of this pilot study, the impact of three different level design conditions (boredom, immersion, and flow) on EEG, and subjective indicators of gameplay experience. Results from the subjective gameplay experience questionnaire support the validity of our level design hypotheses. Patterns of EEG spectral power show that the immersion-level design elicits more activity in the theta band, which may support a relationship between virtual spatial navigation or exploration and theta activity. The research shows that facets of gameplay experience can be assessed with affective ludology measures, such as EEG, in which cognitive and affective patterns emerge from different level designs.},
Author = {L. E. Nacke, S. Stellmach, and C. A. Lindley},
Doi = {10.1177/1046878110378140},
Issn = {1046-8781},
Journal = {Simulation & gaming},
Keywords = {affect,affective ludology,affective_computing,bci,biofeedback,biometric,boredom,brain,brain_and_body,challenge,eeg,effects,emotion,enjoyment,flow,flow_experience,game,gamedesign,gameexperience,gamemetrics,gameplay,gameplay experience,games,geq,gxp,hci,human_brain,immersion,methodology,metric,player experience,quantitative,questionnaire,research,science,theory,userexperience,ux},
MendeleyTags = {affect,affective ludology,affective_computing,bci,biofeedback,biometric,boredom,brain,brain_and_body,challenge,eeg,effects,emotion,enjoyment,flow,flow_experience,game,gamedesign,gameexperience,gamemetrics,gameplay,gameplay experience,games,geq,gxp,hci,human_brain,immersion,methodology,metric,player experience,quantitative,questionnaire,research,science,theory,userexperience,ux},
Number = {5},
Pages = {632-655},
Title = {Electroencephalographic Assessment of Player Experience: A Pilot Study in Affective Ludology},
Type = {Journal article},
Url = {http://sag.sagepub.com/cgi/content/abstract/1046878110378140v1 http://sag.sagepub.com/cgi/content/abstract/42/5/632},
Volume = {42},
Year = {2010},
BdskUrl1 = {http://sag.sagepub.com/cgi/content/abstract/1046878110378140v1%20http://sag.sagepub.com/cgi/content/abstract/42/5/632},
BdskUrl2 = {http://dx.doi.org/10.1177/1046878110378140}}

Psychophysiological methods, such as electroencephalography (EEG), provide reliable high-resolution measurements of affective player experience. In this article, the authors present a psychophysiological pilot study and its initial results to solidify a research approach they call affective ludology, a research area concerned with the physiological measurement of affective responses to player-game interaction. The study investigates the impact of level design on brainwave activity measured with EEG and on player experience measured with questionnaires. The goal of the study was to investigate cognition, emotion, and player behavior from a psychological perspective. For this purpose, a methodology for assessing gameplay experience with subjective and objective measures was developed extending prior work in physiological measurements of affect in digital gameplay. The authors report the result of this pilot study, the impact of three different level design conditions (boredom, immersion, and flow) on EEG, and subjective indicators of gameplay experience. Results from the subjective gameplay experience questionnaire support the validity of our level design hypotheses. Patterns of EEG spectral power show that the immersion-level design elicits more activity in the theta band, which may support a relationship between virtual spatial navigation or exploration and theta activity. The research shows that facets of gameplay experience can be assessed with affective ludology measures, such as EEG, in which cognitive and affective patterns emerge from different level designs.

Gameplay Experience Testing with Playability and Usability Surveys-An Experimental Pilot Study

@article{nacke2010gameplay,
Abstract = {This pilot study investigates an experimental methodology for gathering data to create correlations between experiential factors measured by a gameplay experience questionnaire and player quality measures, such as playing frequency, choice of game, and playing time. The characteristics of two distinct games were examined concerning the aspects of game experience, subjective game quality, and game usability. Interactions within the three aspects were identified. The results suggest that gameplay experience dimensions flow and immersion are similarly motivating in different game genres, which however might not be equally enjoyable. On the one hand, usability ratings may be positively influenced when a game provides immersion and flow or on the other hand, flow and immersion may be negatively influenced by poor usability ratings. These results emphasize the need for an approach to classify games based on correlation patterns involving game experience, quality, and usability.},
Address = {Leuven, Belgium},
Author = {L. E. Nacke, J. Schild, and J. Niesenhaus},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Gameplay-Experience-Testing-with-Playability-and-Usability-Surveys-An-Experimental-Pilot-Study.png},
Journal = {Proceedings of the Playability and Player Experience Workshop at Fun and Games 2010},
Pages = {31-45},
Publisher = {ACM},
Title = {Gameplay Experience Testing with Playability and Usability Surveys-An Experimental Pilot Study},
Url = {https://hcigames.com/download/gameplay-experience-testing-with-playability-and-usability-surveys-an-experimental-pilot-study},
Year = {2010},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Gameplay-Experience-Testing-with-Playability-and-Usability-Surveys-An-Experimental-Pilot-Study.pdf}}

This pilot study investigates an experimental methodology for gathering data to create correlations between experiential factors measured by a gameplay experience questionnaire and player quality measures, such as playing frequency, choice of game, and playing time. The characteristics of two distinct games were examined concerning the aspects of game experience, subjective game quality, and game usability. Interactions within the three aspects were identified. The results suggest that gameplay experience dimensions flow and immersion are similarly motivating in different game genres, which however might not be equally enjoyable. On the one hand, usability ratings may be positively influenced when a game provides immersion and flow or on the other hand, flow and immersion may be negatively influenced by poor usability ratings. These results emphasize the need for an approach to classify games based on correlation patterns involving game experience, quality, and usability.

Methods for Evaluating Gameplay Experience in a Serious Gaming Context

@article{Nacke2010a,
Annote = {This paper presents an approach to formalize gameplay experience evaluation methods applied during the process of player-game interaction and a roadmap for applying these mechanisms in the context of serious games. Based on related work of user experience and player experience models, we propose a three-layer framework of gameplay experience. We also discuss potential use of this framework within the field of game-based learning and serious gaming for sports and health.},
Author = {L. E. Nacke, A. Drachen, and S. Göbel},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Methods-for-Evaluating-Gameplay-Experience-in-a-Serious-Gaming-Context.png},
Journal = {International Journal of Computer Science in Sport},
Keywords = {Affect,Gameplay,Psychophysiology,Serious Gaming,User Experience,experience,gameplay,games,model,theory,ux,ux model},
MendeleyTags = {Affect,Gameplay,Psychophysiology,Serious Gaming,User Experience,theory},
Number = {2},
Title = {Methods for Evaluating Gameplay Experience in a Serious Gaming Context},
Url = {https://hcigames.com/download/methods-for-evaluating-gameplay-experience-in-a-serious-gaming-context},
Volume = {9},
Year = {2010},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Methods-for-Evaluating-Gameplay-Experience-in-a-Serious-Gaming-Context.pdf}}

This paper presents an approach to formalize gameplay experience evaluation methods applied during the process of player-game interaction and a roadmap for applying these mechanisms in the context of serious games. Based on related work of user experience and player experience models, we propose a three-layer framework of gameplay experience. We also discuss potential use of this framework within the field of game-based learning and serious gaming for sports and health.

More Than a Feeling: Measurement of Sonic User Experience and Psychophysiology in a First-Person Shooter Game

@article{Nacke2010b,
Abstract = {The combination of psychophysiological and psychometric methods provides reliable measurements of affective user experience (UX). Understanding the nature of affective UX in interactive entertainment, especially with a focus on sonic stimuli, is an ongoing research challenge. In the empirical study reported here, participants played a fast-paced, immersive first-person shooter (FPS) game modification, in which sound (on/off) and music (on/off) were manipulated, while psychophysiological recordings of electrodermal activity (EDA) and facial muscle activity (EMG) were recorded in addition to a Game Experience Questionnaire (GEQ). Results indicate no main or interaction effects of sound or music on EMG and EDA. However, a significant main effect of sound on all GEQ dimensions (immersion, tension, competence, flow, negative affect, positive affect, and challenge) was found. In addition, an interaction effect of sound and music on GEQ dimension tension and flow indicates an important relationship of sound and music for gameplay experience. Additionally, we report the results of a correlation between GEQ dimensions and EMG/EDA activity. We conclude subjective measures could advance our understanding of sonic UX in digital games, while affective tonic (i.e., long-term psychophysiological) measures of sonic UX in digital games did not yield statistically significant results. One approach for future affective psychophysiological measures of sonic UX could be experiments investigating phasic (i.e., event-related) psychophysiological measures of sonic gameplay elements in digital games. This could improve our general understanding of sonic UX beyond affective gaming evaluation.},
Author = {L. E. Nacke, M. N. Grimshaw, and C. A. Lindley},
Doi = {10.1016/j.intcom.2010.04.005},
Issn = {09535438},
Journal = {Interacting with computers},
Keywords = {action video games,affective gaming,emotion,entertainment,gameplay experience,psychophysiology,sonic user experience (ux),sonic ux,ux},
MendeleyTags = {emotion,gameplay experience,psychophysiology,sonic ux,ux},
Number = {5},
Pages = {7},
Title = {More Than a Feeling: Measurement of Sonic User Experience and Psychophysiology in a First-Person Shooter Game},
Url = {http://dx.doi.org/10.1016/j.intcom.2010.04.005},
Volume = {22},
Year = {2010},
BdskUrl1 = {http://dx.doi.org/10.1016/j.intcom.2010.04.005}}

The combination of psychophysiological and psychometric methods provides reliable measurements of affective user experience (UX). Understanding the nature of affective UX in interactive entertainment, especially with a focus on sonic stimuli, is an ongoing research challenge. In the empirical study reported here, participants played a fast-paced, immersive first-person shooter (FPS) game modification, in which sound (on/off) and music (on/off) were manipulated, while psychophysiological recordings of electrodermal activity (EDA) and facial muscle activity (EMG) were recorded in addition to a Game Experience Questionnaire (GEQ). Results indicate no main or interaction effects of sound or music on EMG and EDA. However, a significant main effect of sound on all GEQ dimensions (immersion, tension, competence, flow, negative affect, positive affect, and challenge) was found. In addition, an interaction effect of sound and music on GEQ dimension tension and flow indicates an important relationship of sound and music for gameplay experience. Additionally, we report the results of a correlation between GEQ dimensions and EMG/EDA activity. We conclude subjective measures could advance our understanding of sonic UX in digital games, while affective tonic (i.e., long-term psychophysiological) measures of sonic UX in digital games did not yield statistically significant results. One approach for future affective psychophysiological measures of sonic UX could be experiments investigating phasic (i.e., event-related) psychophysiological measures of sonic gameplay elements in digital games. This could improve our general understanding of sonic UX beyond affective gaming evaluation.

Playability and Player Experience of Casual Games

@article{calvi2004playability,
Abstract = {This workshop focuses on the development and use of biometrics tests and data harvesting to evaluate games. Although all game genres are addressed, casual games are considered the preferred focus, since playtesting metrics are very much in demand and yet not much often used within the casual gaming industry, although already standard practice in the larger game development studios. The focus of this workshop consists therefore in defining which methods are best to apply in the domains mentioned above, and in analyzing their efficacy and applicability.},
Address = {Leuven, Belgium},
Author = {L. Calvi, S. Gualeni, K. Nuijten, L. E. Nacke, and K. Poels},
Journal = {Proceedings of Fun and Games 2010},
Title = {Playability and Player Experience of Casual Games},
Url = {https://hcigames.com/download/playability-and-player-experience-of-casual-games},
Year = {2010},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Playability-and-Player-Experience-of-Casual-Games.pdf}}

This workshop focuses on the development and use of biometrics tests and data harvesting to evaluate games. Although all game genres are addressed, casual games are considered the preferred focus, since playtesting metrics are very much in demand and yet not much often used within the casual gaming industry, although already standard practice in the larger game development studios. The focus of this workshop consists therefore in defining which methods are best to apply in the domains mentioned above, and in analyzing their efficacy and applicability.

The Neurobiology of Play

@inproceedings{Bateman2010,
Abstract = {A large volume of neurobiological research has been conducted in recent years, almost all of which has been considered solely from the perspective of biology. However, most of the insights gained through this research are also valuable for the game research field. This paper discusses the implications of existing research in neurobiology to the play of games (including, but not restricted to digital games), and connects neurobiological perspectives with models of play aiming to construct superior player satisfaction models built upon biological foundations. Connections are presented between already recognized patterns of play and recent research on the brain (in particular, the limbic system). By providing a framework for understanding how the brain responds to recurrent patterns inherent to play, we aim to provide a platform for future experimental player-game interaction research (for which possible directions are briefly explored), and a propaedeutic to biologically-grounded player satisfaction models.},
Address = {Vancouver, BC, Canada},
Author = {C. Bateman and L. E. Nacke},
Booktitle = {Proceedings of Futureplay 2010},
Doi = {10.1145/1920778.1920780},
Img = {http://hcigames.com/wp-content/uploads/2015/02/The-Neurobiology-of-Play.png},
Isbn = {9781450302357},
Keywords = {brain,brain research,brainhex,ludology,neurobiology,neurology,play patterns,player satisfaction modeling,player types,playstyle},
MendeleyTags = {brainhex,ludology,neurobiology,neurology,play patterns,player types,playstyle},
Month = {may},
Pages = {1-8},
Publisher = {ACM},
Title = {The Neurobiology of Play},
Url = {https://hcigames.com/download/the-neurobiology-of-play},
Year = {2010},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/The-Neurobiology-of-Play.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/1920778.1920780}}

A large volume of neurobiological research has been conducted in recent years, almost all of which has been considered solely from the perspective of biology. However, most of the insights gained through this research are also valuable for the game research field. This paper discusses the implications of existing research in neurobiology to the play of games (including, but not restricted to digital games), and connects neurobiological perspectives with models of play aiming to construct superior player satisfaction models built upon biological foundations. Connections are presented between already recognized patterns of play and recent research on the brain (in particular, the limbic system). By providing a framework for understanding how the brain responds to recurrent patterns inherent to play, we aim to provide a platform for future experimental player-game interaction research (for which possible directions are briefly explored), and a propaedeutic to biologically-grounded player satisfaction models.

Wiimote vs. Controller: Electroencephalographic Measurement of Affective Gameplay Interaction

@inproceedings{Nacke2010,
Abstract = {Psychophysiological methods provide covert and reliable affective measurements of user experience (UX). The nature of affective UX in interactive entertainment is currently not well understood. With the dawn of new gaming consoles, scientific methodologies for studying user interaction in immersive entertainment (e.g., digital gaming) are needed. This paper reports a study on the influence of interaction modes (Playstation 2 game controller vs. Wii remote and Nunchuk) on subjective experience and brain activity measured with electroencephalography (EEG). Results indicate that EEG alpha and delta power correlate with negative affect and tension when using regular game controller input. EEG beta and gamma power seem to be related to the feeling of possible actions in spatial presence with a PS2 game controller. Delta as well as theta power correlate with self-location using a Wii remote and Nunchuk.},
Address = {Vancouver, BC, Canada},
Author = {L. E. Nacke},
Booktitle = {Proceedings of Futureplay 2010},
Doi = {10.1145/1920778.1920801},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Wiimote-vs.-Controller-Electroencephalographic-Measurement-of-Affective-Gameplay-Interaction.png},
Isbn = {9781450302357},
Keywords = {affective computing,digital games,eeg,electroencephalography,electroencephalography (EEG),entertainment,games,hci,interaction,psychophysiology,user experience,user experience (UX)},
MendeleyTags = {affective computing,digital games,eeg,electroencephalography,entertainment,games,hci,interaction,psychophysiology,user experience},
Month = {may},
Pages = {159-166},
Publisher = {ACM},
Title = {Wiimote vs. Controller: Electroencephalographic Measurement of Affective Gameplay Interaction},
Url = {https://hcigames.com/download/wiimote-vs-controller-electroencephalographic-measurement-of-affective-gameplay-interaction},
Year = {2010},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Wiimote-vs.-Controller-Electroencephalographic-Measurement-of-Affective-Gameplay-Interaction.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/1920778.1920801}}

Psychophysiological methods provide covert and reliable affective measurements of user experience (UX). The nature of affective UX in interactive entertainment is currently not well understood. With the dawn of new gaming consoles, scientific methodologies for studying user interaction in immersive entertainment (e.g., digital gaming) are needed. This paper reports a study on the influence of interaction modes (Playstation 2 game controller vs. Wii remote and Nunchuk) on subjective experience and brain activity measured with electroencephalography (EEG). Results indicate that EEG alpha and delta power correlate with negative affect and tension when using regular game controller input. EEG beta and gamma power seem to be related to the feeling of possible actions in spatial presence with a PS2 game controller. Delta as well as theta power correlate with self-location using a Wii remote and Nunchuk.

Year 2009

Affective Ludology, Flow and Immersion in a First-Person Shooter: Measurement of Player Experience

@article{Nacke_AL2009,
Abstract = {Gameplay research about experiential phenomena is a challenging undertaking,given the variety of experiences that gamers encounter when playing and whichcurrently do not have a formal taxonomy, such as flow, immersion, boredom, andfun. These informal terms require a scientific explanation. Ludologists alsoacknowledge the need to understand cognition, emotion, and goal- orientedbehavior of players from a psychological perspective by establishing rigorousmethodologies. This paper builds upon and extends prior work in an area forwhich we would like to coin the term "affective ludology." The area isconcerned with the affective measurement of player-game interaction. Theexperimental study reported here investigated different traits of gameplayexperience using subjective (i.e., questionnaires) and objective (i.e.,psychophysiological) measures. Participants played three Half-Life 2 game leveldesign modifications while measures such as electromyography (EMG),electrodermal activity (EDA) were taken and questionnaire responses werecollected. A level designed for combat-oriented flow experience demonstratedsignificant high-arousal positive affect emotions. This method shows thatemotional patterns emerge from different level designs, which has greatpotential for providing real-time emotional profiles of gameplay that may begenerated together with self- reported subjective player experience descriptions.},
Author = {L. E. Nacke and C. A. Lindley},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Affective-Ludology-Flow-and-Immersino-in-a-First-Person-Shooter-Measurement-of-Player-Experience.png},
Journal = {Loading},
Keywords = {3dve,Game design,affect,affective computing,affective_computing,attention,biofeedback,biometric,effects,emg,emotion,emotional,enjoyment,experience,experimentation,flow,flow_experience,game design,gamedesign,gameexperience,gamemetrics,gameplay,gameplay experience,games,immersion,physiology,playability,player experience,psychophysiology,user experience,ux},
MendeleyTags = {3dve,affect,affective computing,affective_computing,attention,biofeedback,biometric,effects,emg,emotion,emotional,enjoyment,experience,experimentation,flow,flow_experience,game design,gamedesign,gameexperience,gamemetrics,gameplay,games,immersion,physiology,playability,player experience,psychophysiology,user experience,ux},
Number = {5},
Title = {Affective Ludology, Flow and Immersion in a First-Person Shooter: Measurement of Player Experience},
Type = {Journal article},
Url = {https://hcigames.com/download/affective-ludology-flow-and-immersion-in-a-first-person-shooter-measurement-of-player-experience},
Volume = {3},
Year = {2009},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Affective-Ludology-Flow-and-Immersino-in-a-First-Person-Shooter-Measurement-of-Player-Experience.pdf}}

Gameplay research about experiential phenomena is a challenging undertaking,given the variety of experiences that gamers encounter when playing and whichcurrently do not have a formal taxonomy, such as flow, immersion, boredom, andfun. These informal terms require a scientific explanation. Ludologists alsoacknowledge the need to understand cognition, emotion, and goal- orientedbehavior of players from a psychological perspective by establishing rigorousmethodologies. This paper builds upon and extends prior work in an area forwhich we would like to coin the term "affective ludology." The area isconcerned with the affective measurement of player-game interaction. Theexperimental study reported here investigated different traits of gameplayexperience using subjective (i.e., questionnaires) and objective (i.e.,psychophysiological) measures. Participants played three Half-Life 2 game leveldesign modifications while measures such as electromyography (EMG),electrodermal activity (EDA) were taken and questionnaire responses werecollected. A level designed for combat-oriented flow experience demonstratedsignificant high-arousal positive affect emotions. This method shows thatemotional patterns emerge from different level designs, which has greatpotential for providing real-time emotional profiles of gameplay that may begenerated together with self- reported subjective player experience descriptions.

Affective Ludology: Scientific Measurement of User Experience in Interactive Entertainment

@misc{Nacke2009h,
Abstract = {Digital games provide the most engaging interactive experiences. Researching gameplay experience is done mainly in the science and technology (e.g., human-computer interaction, physiological and entertainment computing) and social science (e.g., media psychology, psychophysiology, and communication sciences) research communities. This thesis is located at the intersection of these research areas, bringing together emerging methodological and scientific approaches from these multi-faceted communities for an affective ludology; a novel take on game analysis and design with focus on the player. The thesis contributes to game research with three important results: the establishment of a objective/subjective correlation methodology founded on psychophysiological methods, the creation of a formal theoretical framework in which to conduct user experience (UX) research related to games, and the combination of results regarding cognitive and emotional factors for describing, defining, and classifying the interactive relationship between players and games. Two approaches for measuring gameplay experience are used in this thesis. First, objective assessment of physiological user responses together with automated event-logging techniques, so called game metrics, allows collecting essential player- and game-related variables for a comprehensive understanding of their interaction. Second, using psychometric questionnaires allows a reliable assessment of players' subjective emotion and cognition during gameplay. The benefit of psychophysiological methods is that they are non-intrusive, covert, reliable, and objective. To fully understand psychophysiological results, a correlation between subjective gameplay experience ratings and psychophysiological responses is necessary and has been done in this thesis and prior work it builds on. This thesis explores objective and subjective assessment of gameplay experience in several experiments. The experiments focus on: level design implications from psychophysiological and questionnaire measurements, the impact of form and age on subjective gameplay experience, the impact of game audio and sound on objective and subjective player responses, and the impact of game interaction design on and the relationship between experience and electroencephalographic measures. In addition, the thesis includes a theoretical framework for UX research in games, which classifies gameplay experience along the dimensions of abstraction and time. One remaining conceptual and empirical challenge for this framework is the huge variety of vaguely defined experiential phenomena, such as immersion, flow, presence, and engagement. However, the results from the experimental studies show that by establishing correlations between psychophysiological responses and questionnaire data, we are approaching a better, scientifically grounded, understanding of gameplay experience. Many possibilities open from here. More detailed analyses of cognition will help us understand to what extent gameplay experience depends on emotional or cognitive processing. In addition, the inclusion of more complex and detailed gameplay metrics data together with psychophysiological metrics will enable a comprehensive analysis of player behavior, attention, and motivation. Finally, the integration of new measurement technologies in interactive entertainment applications will not only allow a detailed assessment of gameplay, but also improve physical and mental interaction with future games.},
Address = {Karlskrona},
Author = {L. E. Nacke},
Booktitle = {Ph.D. Thesis. Blekinge Institute of Technology},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2015/02/Affective-Ludology-Scientific-Measurement-of-User-Experience-in-Interactive-Entertainment.png},
Keywords = {emotion,game design,games,interaction design,media psychology,physiologic measures,physiological computing,psychology,psychophysiology,user experience},
MendeleyTags = {emotion,physiological computing,psychophysiology},
Title = {Affective Ludology: Scientific Measurement of User Experience in Interactive Entertainment},
Url = {https://hcigames.com/download/affective-ludology-scientific-measurement-of-user-experience-in-interactive-entertainment},
Year = {2009},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Affective-Ludology-Scientific-Measurement-of-User-Experience-in-Interactive-Entertainment.pdf}}

Digital games provide the most engaging interactive experiences. Researching gameplay experience is done mainly in the science and technology (e.g., human-computer interaction, physiological and entertainment computing) and social science (e.g., media psychology, psychophysiology, and communication sciences) research communities. This thesis is located at the intersection of these research areas, bringing together emerging methodological and scientific approaches from these multi-faceted communities for an affective ludology; a novel take on game analysis and design with focus on the player. The thesis contributes to game research with three important results: the establishment of a objective/subjective correlation methodology founded on psychophysiological methods, the creation of a formal theoretical framework in which to conduct user experience (UX) research related to games, and the combination of results regarding cognitive and emotional factors for describing, defining, and classifying the interactive relationship between players and games. Two approaches for measuring gameplay experience are used in this thesis. First, objective assessment of physiological user responses together with automated event-logging techniques, so called game metrics, allows collecting essential player- and game-related variables for a comprehensive understanding of their interaction. Second, using psychometric questionnaires allows a reliable assessment of players' subjective emotion and cognition during gameplay. The benefit of psychophysiological methods is that they are non-intrusive, covert, reliable, and objective. To fully understand psychophysiological results, a correlation between subjective gameplay experience ratings and psychophysiological responses is necessary and has been done in this thesis and prior work it builds on. This thesis explores objective and subjective assessment of gameplay experience in several experiments. The experiments focus on: level design implications from psychophysiological and questionnaire measurements, the impact of form and age on subjective gameplay experience, the impact of game audio and sound on objective and subjective player responses, and the impact of game interaction design on and the relationship between experience and electroencephalographic measures. In addition, the thesis includes a theoretical framework for UX research in games, which classifies gameplay experience along the dimensions of abstraction and time. One remaining conceptual and empirical challenge for this framework is the huge variety of vaguely defined experiential phenomena, such as immersion, flow, presence, and engagement. However, the results from the experimental studies show that by establishing correlations between psychophysiological responses and questionnaire data, we are approaching a better, scientifically grounded, understanding of gameplay experience. Many possibilities open from here. More detailed analyses of cognition will help us understand to what extent gameplay experience depends on emotional or cognitive processing. In addition, the inclusion of more complex and detailed gameplay metrics data together with psychophysiological metrics will enable a comprehensive analysis of player behavior, attention, and motivation. Finally, the integration of new measurement technologies in interactive entertainment applications will not only allow a detailed assessment of gameplay, but also improve physical and mental interaction with future games.

Brain Training for Silver Gamers: Effects of Age and Game Form on Effectiveness, Efficiency, Self-Assessment, and Gameplay Experience.

@article{NackeEtAl2009a,
Abstract = {In recent years, an aging demographic majority in the Western world has come to the attention of the game industry. The recently released "brain-training" games target this population, and research investigating gameplay experience of the elderly using this game form is lacking. This study employs a 2 x 2 mixed factorial design (age group: young and old x game form: paper and Nintendo DS) to investigate effects of age and game form on usability, self-assessment, and gameplay experience in a supervised field study. Effectiveness was evaluated in task completion time, efficiency as error rate, together with self-assessment measures (arousal, pleasure, dominance) and game experience (challenge, flow, competence, tension, positive and negative affect). Results indicate players, regardless of age, are more effective and efficient using pen-and-paper than using a Nintendo DS console. However, the game is more arousing and induces a heightened sense of flow in digital form for gamers of all ages. Logic problem-solving challenges within digital games may be associated with positive feelings for the elderly but with negative feelings for the young. Thus, digital logic-training games may provide positive gameplay experience for an aging Western civilization.},
Author = {L. E. Nacke, A. Nacke, and C. A. Lindley},
Doi = {10.1089/cpb.2009.0013},
Img = {http://hcigames.com/wp-content/uploads/2015/05/Brain-Training-for-Silver-Gamers-Effects-of-Age-and-Game-Form-on-Effectiveness-Efficiency-Self-Assessment-and-Gameplay-Experience.png},
Issn = {1557-8364},
Journal = {CyberPsychology & Behavior},
Keywords = {80 and over,Adaptation,Adolescent,Adult,Aged,Aging,Aging: psychology,Cognition,Consumer Satisfaction,Female,Humans,Male,Play and Playthings,Play and Playthings: psychology,Problem Solving,Psychological,Self Assessment (Psychology),Video Games,Video Games: classification,Video Games: psychology,Young Adult,arousal,assessibility,brain,effects,eldergames,elderly,enjoyment,geq,mannequin,mental,motivation,performance,psychology,research,survey,usability,ux},
Language = {en},
MendeleyTags = {arousal,assessibility,brain,effects,eldergames,elderly,enjoyment,geq,mannequin,mental,motivation,performance,psychology,research,survey,usability,ux},
Number = {5},
Pages = {493-499},
Pmid = {19772440},
Publisher = {Mary Ann Liebert, Inc. 140 Huguenot Street, 3rd Floor New Rochelle, NY 10801 USA},
Title = {Brain Training for Silver Gamers: Effects of Age and Game Form on Effectiveness, Efficiency, Self-Assessment, and Gameplay Experience.},
Type = {Journal article},
Url = {https://hcigames.com/download/brain-training-for-silver-gamers-effects-of-age-and-game-form-on-effectiveness-efficiency-self-assessment-and-gameplay-experience.},
Volume = {12},
Year = {2009},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Brain-Training-for-Silver-Gamers-Effects-of-Age-and-Game-Form-on-Effectiveness-Efficiency-Self-Assessment-and-Gameplay-Experience..pdf},
BdskUrl2 = {http://dx.doi.org/10.1089/cpb.2009.0013}}

In recent years, an aging demographic majority in the Western world has come to the attention of the game industry. The recently released "brain-training" games target this population, and research investigating gameplay experience of the elderly using this game form is lacking. This study employs a 2 x 2 mixed factorial design (age group: young and old x game form: paper and Nintendo DS) to investigate effects of age and game form on usability, self-assessment, and gameplay experience in a supervised field study. Effectiveness was evaluated in task completion time, efficiency as error rate, together with self-assessment measures (arousal, pleasure, dominance) and game experience (challenge, flow, competence, tension, positive and negative affect). Results indicate players, regardless of age, are more effective and efficient using pen-and-paper than using a Nintendo DS console. However, the game is more arousing and induces a heightened sense of flow in digital form for gamers of all ages. Logic problem-solving challenges within digital games may be associated with positive feelings for the elderly but with negative feelings for the young. Thus, digital logic-training games may provide positive gameplay experience for an aging Western civilization.

From Playability to a Hierarchical Game Usability Model

@inproceedings{Nacke2009,
Abstract = {This paper presents a brief review of current game usability models. This leads to the conception of a high-level game usability framework model that integrates current usability approaches in game industry and game research.},
Address = {Vancouver, BC, Canada},
Author = {L. E. Nacke},
Booktitle = {Proceedings of Future Play 2009},
Doi = {10.1145/1639601.1639609},
Img = {http://hcigames.com/wp-content/uploads/2015/02/From-Playability-to-a-Hierarchical-Game-Usability-Model.png},
Keywords = {game,game design,gamedesign,gameexperience,games,gxp,model,perceptual,play,playability,player,player experience,playing,theory,usability,userexperience,ux},
MendeleyTags = {game,game design,gamedesign,gameexperience,games,gxp,model,perceptual,play,playability,player,playing,theory,usability,userexperience,ux},
Pages = {11-12},
Publisher = {ACM},
Title = {From Playability to a Hierarchical Game Usability Model},
Url = {https://hcigames.com/download/from-playability-to-a-hierarchical-game-usability-model},
Year = {2009},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/From-Playability-to-a-Hierarchical-Game-Usability-Model.pdf},
BdskUrl2 = {http://dx.doi.org/10.1145/1639601.1639609}}

This paper presents a brief review of current game usability models. This leads to the conception of a high-level game usability framework model that integrates current usability approaches in game industry and game research.

Game Experience: Components and Methods of Measurement

@article{nacke2009game,
Abstract = {In this talk, we will have a look at game experience models and what components they consist of. Next, we continue to identify what components could potentially be measured using the methodology established in the EU-funded FUGA project. We establish a basic model of player experience and propose how this is useful for game industry and research.},
Address = {Espoo, Finland},
Author = {L. E. Nacke},
Journal = {Proceedings of fuga 2009},
Publisher = {Helsinki Institute for Information Technology (HIIT)},
Title = {Game Experience: Components and Methods of Measurement},
Url = {http://www.bth.se/fou/forskinfo.nsf/all/62867664e5785865c12575c800422fcf},
Year = {2009},
BdskUrl1 = {http://www.bth.se/fou/forskinfo.nsf/all/62867664e5785865c12575c800422fcf}}

In this talk, we will have a look at game experience models and what components they consist of. Next, we continue to identify what components could potentially be measured using the methodology established in the EU-funded FUGA project. We establish a basic model of player experience and propose how this is useful for game industry and research.

Gameplay Experience in a Gaze Interaction Game

@inproceedings{Nacke2009b,
Abstract = {Assessing gameplay experience for gaze interaction games is a challenging task. For this study, a gaze interaction Half-Life 2 game modification was created that allowed eye tracking control. The mod was deployed during an experiment at Dreamhack 2007, where participants had to play with gaze navigation and afterwards rate their gameplay experience. The results show low tension and negative affects scores on the gameplay experience questionnaire as well as high positive challenge, immersion and flow ratings. The correlation between spatial presence and immersion for gaze interaction was high and yields further investigation. It is concluded that gameplay experience can be correctly assessed with the methodology presented in this paper.},
Address = {Lyngby, Denmark},
Annote = {available online},
Author = {L. E. Nacke, S. Stellmach, D. Sasse, and C. A. Lindley},
Booktitle = {Proceedings of COGAIN 2009},
Editor = {A. Villanueva, J. P. Hansen, and B. K. Ersbo ll},
Img = {http://hcigames.com/wp-content/uploads/2015/05/Gameplay-Experience-in-a-Gaze-Interaction-Game.png},
Keywords = {eyetracker,eyetracking,file-import,game,gaze,gazeinteraction,usability,ux},
MendeleyTags = {eyetracker,eyetracking,file-import,game,gaze,gazeinteraction,usability,ux},
Pages = {49-54},
Publisher = {The COGAIN Association},
Title = {Gameplay Experience in a Gaze Interaction Game},
Type = {Conference proceedings (article)},
Url = {https://hcigames.com/download/gameplay-experience-in-a-gaze-interaction-game},
Year = {2009},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Gameplay-Experience-in-a-Gaze-Interaction-Game.pdf}}

Assessing gameplay experience for gaze interaction games is a challenging task. For this study, a gaze interaction Half-Life 2 game modification was created that allowed eye tracking control. The mod was deployed during an experiment at Dreamhack 2007, where participants had to play with gaze navigation and afterwards rate their gameplay experience. The results show low tension and negative affects scores on the gameplay experience questionnaire as well as high positive challenge, immersion and flow ratings. The correlation between spatial presence and immersion for gaze interaction was high and yields further investigation. It is concluded that gameplay experience can be correctly assessed with the methodology presented in this paper.

Playability and Player Experience Research

@inproceedings{NackeetalDiGRA2009Panel,
Abstract = {As the game industry matures and games become more and more complex, there is an increasing need to develop scientific methodologies for analyzing and measuring player experience, in order to develop a better understanding of the relationship and interactions between players and games. This panel gathers distinguished European playability and user experience experts to discuss current findings and methodological advancements within player experience and playability research.},
Address = {Brunel University, West London, UK},
Author = {L. E. Nacke, A. Drachen, K. Kuikkaniemi, J. Niesenhaus, H. J. Korhonen, W. M. van den Hoogen, K. Poels, W. A. IJsselsteijn, and Y. A. W. de Kort},
Booktitle = {Proceedings of DiGRA 2009},
Keywords = {experimentation,gameexperience,methodology,playability,techniques,usability,userexperience,ux},
MendeleyTags = {experimentation,gameexperience,methodology,playability,techniques,usability,userexperience,ux},
Publisher = {DiGRA},
Title = {Playability and Player Experience Research},
Type = {Conference proceedings (article)},
Url = {https://hcigames.com/download/playability-and-player-experience-research},
Year = {2009},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Playability-and-Player-Experience-Research.pdf}}

As the game industry matures and games become more and more complex, there is an increasing need to develop scientific methodologies for analyzing and measuring player experience, in order to develop a better understanding of the relationship and interactions between players and games. This panel gathers distinguished European playability and user experience experts to discuss current findings and methodological advancements within player experience and playability research.

Trends and Techniques in Visual Gaze Analysis

@inproceedings{Stellmach2009a,
Abstract = {Visualizing gaze data is an effective way for the quick interpretation of eye tracking results. This paper presents a study investigation benefits and limitations of visual gaze analysis among eye tracking professionals and researchers. The results were used to create a tool for visual gaze analysis within a Master's project.},
Address = {Lyngby, Denmark},
Author = {S. Stellmach, L. E. Nacke, R. Dachselt, and C. A. Lindley},
Booktitle = {Proceedings of COGAIN 2009},
Editor = {A. Villanueva, J. P. Hansen, and B. K. Ersbo ll},
File = {::},
Img = {http://hcigames.com/wp-content/uploads/2015/05/Trends-and-Techniques-in-Visual-Gaze-Analysis.png},
Keywords = {Stellmach2009,analytics,code,eye tracking,eyetracker,eyetracking,gaze,gaze visualizations,programming,survey,techniques,trends,visualization,xna},
MendeleyTags = {Stellmach2009,code,eyetracker,eyetracking,gaze,programming,survey,techniques,trends,visualization,xna},
Organization = {DTU},
Pages = {89-93},
Publisher = {The COGAIN Association},
Title = {Trends and Techniques in Visual Gaze Analysis},
Type = {Conference proceedings (article)},
Url = {https://hcigames.com/download/trends-and-techniques-in-visual-gaze-analysis},
Year = {2009},
BdskUrl1 = {https://hcigames.com/wp-content/uploads/2015/01/Trends-and-Techniques-in-Visual-Gaze-Analysis.pdf}}

Visualizing gaze data is an effective way for the quick interpretation of eye tracking results. This paper presents a study investigation benefits and limitations of visual gaze analysis among eye tracking professionals and researchers. The results were used to create a tool for visual gaze analysis within a Master's project.