Game studies, also known as ludology (from ludus, "game", and -logia, "study", "research"), is the study of games, the act of playing them, and the players and cultures surrounding them. It is a field of cultural studies that deals with all types of games throughout history. This field of research utilizes the tactics of, at least, folkloristics and cultural heritage, sociology and psychology, while examining aspects of the design of the game, the players in the game, and the role the game plays in its society or culture. Game studies is oftentimes confused with the study of video games, but this is only one area of focus; in reality game studies encompasses all types of gaming, including sports, board games, etc.
Before video games, game studies was rooted primarily in anthropology. However, with the development and spread of video games, games studies has diversified methodologically, to include approaches from sociology, psychology, and other fields.
There are now a number of strands within game studies: "social science" approaches explore how games function in society, and their interactions with human psychology, often using empirical methods such as surveys and controlled lab experiments. "Humanities-based" approaches emphasise how games generate meanings and reflect or subvert wider social and cultural discourses. These often use more interpretative methods, such as close reading, textual analysis, and audience theory, methods shared with other media disciplines such as television and film studies. Social sciences and humanities approaches can cross over, for example in the case of ethnographic or folkloristic studies, where fieldwork may involve patiently observing games to try to understand their social and cultural meanings. "Game design" approaches are closely related to creative practice, analysing game mechanics and aesthetics in order to inform the development of new games. Finally, "industrial" and "engineering" approaches apply mostly to video games and less to games in general, and examine things such as computer graphics, artificial intelligence, and networking.
It was not until Irving Finkel organized a colloquium in 1990 that grew into the International Board Game Studies Association, Gonzalo Frasca popularized the term "ludology" (from the Latin word for game, ludus) in 1999, the publication of the first issues of academic journals like Board Game Studies in 1998 and Game Studies in 2001, and the creation of the Digital Games Research Association in 2003, that scholars began to get the sense that the study of games could (and should) be considered a field in its own right. As a young field, it gathers scholars from different disciplines that had been broadly studying games, such as psychology, anthropology, economy, education, and sociology. The earliest known use of the term "ludology" occurred in 1982, in Mihaly Csikszentmihalyi's "Does Being Human Matter – On Some Interpretive Problems of Comparative Ludology."
One of the earliest social science theories (1971) about the role of video games in society involved violence in video games, later becoming known as the catharsis theory. The theory suggests that playing video games in which you perform violent acts might actually channel latent aggression, resulting in less aggression in the players real lives. However, a meta-study performed by Craig A. Anderson and Brad J. Bushman, in 2001, examined data starting from the 1980s up until the article was published. The purpose of this study was to examine whether or not playing violent video games led to an increase in aggressive behaviors. They concluded that exposure to violence in video games did indeed cause an increase in aggression. However, it has been pointed out, and even stressed, by psychologist Jonathan Freedman that this research was very limited and even problematic since overly strong claims were made and the authors themselves seemed extremely biased in their writings. More recent studies, such as the one performed by Christopher J. Ferguson at Texas A&M International University have come to drastically different conclusions. In this study, individuals were either randomly assigned a game, or allowed to choose a game, in both the randomized and the choice conditions exposure to violent video games caused no difference in aggression. A later study (performed by the same people) looked for correlations between trait aggression, violent crimes, and exposure to both real life violence and violence in video games, this study suggests that while family violence and trait aggression are highly correlated with violent crime, exposure to video game violence was not a good predictor of violent crime, having little to no correlation, unless also paired with the above traits that had a much higher correlation. Over the past 15 years, a large number of meta-studies have been applied to this issue, each coming to its own conclusion, resulting in little consensus in the ludology community. It is also thought that even nonviolent video games may lead to aggressive and violent behaviour. Anderson and Dill seem to believe that it may be due to the frustration of playing video games that could in turn result in violent, aggressive behaviour.
Game designers Amy Jo Kim and Jane McGonigal have suggested that platforms which leverage the powerful qualities of video games in non-game contexts can maximize learning. Known as the gamification of learning, using game elements in non-game contexts extracts the properties of games from within the game context, and applies them to a learning context such as the classroom.
Another positive aspect of video games is its conducive character towards the involvement of a person in other cultural activities. The probability of game playing increases with the consumption of other cultural goods (e.g., listening to music or watching television) or active involvement in artistic activities (e.g., writing or visual arts production). Video games by being complementary towards more traditional forms of cultural consumption, inhibit thus value from a cultural perspective.
More sociologically-informed research has sought to move away from simplistic ideas of gaming as either 'negative' or 'positive', but rather seeking to understand its role and location in the complexities of everyday life.
For example, it has been suggested (Nina Fefferman)  that the very popular MMO World of Warcraft could be used to study the dissemination of infectious diseases because of the accidental spread of a plague-like disease in the gameworld.
"Ludology" vs "narratology"
This section needs additional citations for verification. (June 2013)
A major focus in game studies is the debate surrounding narratology and ludology. Many ludologists believe that the two are unable to exist together, while others believe that the two fields are similar but should be studied separately. Many narratologists believe that games should be looked at for their stories, like movies or novels. The ludological perspective says that games are not like these other mediums due to the fact that a player is actively taking part in the experience and should therefore be understood on their own terms. The idea that a videogame is "radically different to narratives as a cognitive and communicative structure" has led the development of new approaches to criticism that are focused on videogames as well as adapting, repurposing and proposing new ways of studying and theorizing about videogames. A recent approach towards game studies[which?] starts with an analysis of interface structures and challenges the keyboard-mouse paradigm with what is called a "ludic interface".
Academics across both fields provide scholarly insight into the different sides of this debate. Gonzalo Frasca, a notable ludologist due to his many publications regarding game studies, argues that while games share many similar elements with narrative stories, that should not prevent games to be studied as games. He seeks not "to replace the narratologic approach, but to complement it."
Jesper Juul, another notable ludologist, argues for a stricter separation of ludology and narratology. Juul argues that games "for all practicality can not tell stories." This argument holds that narratology and ludology cannot exist together because they are inherently different. Juul claims that the most significant difference between the two is that in a narrative, events "have to" follow each other, whereas in a game the player has control over what happens.
Garry Crawford and Victoria K. Gosling argue in favor of narratives being an essential part of games as these will contribute to, and be informed by, gamer's personal life and identity narratives. As they write "it is impossible to isolate play from the social influences of everyday life, and in turn, play will have both intended and unintended consequences for the individual and society."
Janet Murray, in support of the narratologist method of video game argues that "stories can be participatory." In this argument, Murray is linking the characteristics of video games to narratives to further her point that video games should be analyzed through narratology.
Michalis Kokonis argues in favor of Gonzalo Frasca's article entitled "Ludologists love stories too: notes from a debate that never took place," which aimed to list and explain the misunderstandings, mistakes, and prejudices surrounding the narratology vs. ludology debate. Kokonis noted that "endorsing [Frasca's] constructivist spirit we will have to agree that the so-called Narratology vs. Ludology Dilemma is a false one and that this debate will have to be resolved, as it is of no help to the cause of establishing Computer Games Study as an autonomous and independent academic field."
Other areas of research
As is common with most academic disciplines, there are a number of more specialized areas or sub-domains of study.
Video game pre-history
An emerging field of study looks at the "pre-history" of video games, suggesting that the origins of modern digital games lie in: fairground attractions and sideshows such as shooting games; early "Coney Island"-style pleasure parks with elements such as large roller-coasters and "haunted house" simulations; nineteenth century landscape simulations such as dioramas, panoramas, planetariums, and stereographs; and amusement arcades that had mechanical game machines and also peep-show film machines.
Games and aging
In light of population ageing, there has been an interest into the use of games to improve the overall health and social connectedness of ageing players. For example, Adam Gazzaley and his team have designed NeuroRacer (a game that improves cognitive tasks outside of the game among its 60+ year old participants), while the AARP has organized a game jam to improve older people's social connections. Researchers such as Sarah Mosberg Iversen have argued that most of the academic work on games and ageing has been informed by notions of economical productivity, while Bob De Schutter and Vero Vanden Abeele have suggested a game design approach that is not focused on age-related decline but instead is rooted in the positive aspects of older age.
Virtual economies in gaming
Massive multiplayer online games can give economists clues about the real world. Markets based on digital information can be fully tracked as they are used by players, and thus real problems in the economy, such as inflation, deflation and even recession. The solutions the game designers come up with can therefore be studied with full information, and experiments can be performed where the economy can be studied as a whole. These games allow the economists to be omniscient, they can find every piece of information they need to study the economy, while in the real world they have to work with presumptions.
Former Finance Minister of Greece and Valve's in-house economist Yanis Varoufakis studied EVE Online as a measure for the Greek economic recovery and argued that video game communities such as Neopets and Fortnite give economists a venue for experimenting and simulating the economies of the future. Edward Castronova has studied virtual economies within a variety of games including Everquest and World of Warcraft.
The psychological research into games has yielded theories on how playing video games may be advantageous for both children and for adults. Some theories claim that video games in fact help improve cognitive abilities rather than impede their development. These improvement theories include the improvement of visual contrast sensitivity. Other developments include the ability to locate something specific among various impediments. This is primarily done in first-person shooter games where the protagonist must look at everything in a first person view while playing. By doing this they increase their spatial attention due to having to locate something among an area of diversions. These games place the player in a high intensity environment where the player must remain observant of their surroundings in order to achieve their goal, e.g., shooting an enemy player, while impediments obstruct their gameplay in the virtual world.
Another cognitive enhancement provided by playing video games would be the improvement of brain functioning speed. This happens as the player is immersed in an unendingly changing environment where they are required to constantly think and problem solve while playing in order to do well in the game. This constant problem solving forces the brain to constantly run and so the speed of thought is sharpened greatly, because the need to think quickly is required to succeed. The attention span of the player is also benefited. High action video games, such as fighting or racing games, require the user's constant attention and in the process the skill of concentration is sharpened.
The overcoming of the condition known as dyslexia is also considered an improvement due to the continuous utilization of controllers for the video games. This continuous process helps to train the users to overcome their condition which impedes in their abilities of interpretation. The ability of hand-eye coordination is also improved thanks in part to video games, due to the need to operate the controller and view the screen displaying the content all at the same time. The coordination of the player is enhanced due to the playing and continuous observation of a video game since the game gives high mental stimulation and coordination is important and therefore enhanced due to the constant visual and physical movement that is produced from the playing of the video game.
The playing of video games can also help increase a player's social skills. This is done by playing online multiplayer games which can require constant communication, this leads to socialization between players in order to achieve the goal within the game they may be playing. In addition it can help the users to meet new friends over their online games and at the same time communicate with friends they have already made in the past; those playing together online would only strengthen their already established bond through constant cooperation. Some video games are specifically designed to aid in learning, because of this another benefit of playing video games could be the educational value provided with the entertainment. Some video games present problem solving questions that the player must think on in order to properly solve, while action orientated video games require strategy in order to successfully complete. This process of being forced to think critically helps to sharpen the mind of the player.
One aspect of game studies is the study of gaming culture. People who play video games are a subculture of their own. Gamers will often form communities with their own languages, attend conventions where they will dress up as their favorite characters, and have gaming competitions. One of these conventions, Gamescom 2018, had a record attendance with an estimated 370,000 attendees.
Esports are making a significant impact in gaming culture. In 2018, Newzoo, a marketing analytics company reported that 380 million people will watch esports that year. Many gamers seek to form communities to meet new people and share their love of games. In 2014, Newzoo reported that 81% of gamers attend esport to be a part of the gaming community. "61% of gamers attend live events and tournaments to connect with friends that they've met and played with online."
Throughout the years, there has been much research on the topic of game culture, specifically focusing on video games in relation to thinking, learning, gender, children, and war. When looking at game culture, particularly for early studies, multiplayer online games were usually the basis for research. However, more recent and wider ranging research has sought to understand not just gaming cultures, but in turn, how video games provide important insights into the modern nature of digital and participatory culture, patterns of consumption and identity formation, later modernity and contemporary political rationalities.
Demographics of gamers (in the US)
- 75% of households have a gamer.
- 65% of adults play video games.
- 60% of adults play on smartphones, 52% play on a personal computer, and 49% play on a dedicated game console.
- 32 is the average age of male gamers.
- 34 is the average age of female gamers.
- 54% of gamers are men. 46% are women.
- Huizinga, Johan (1938). Homo Ludens. Haarlem: Tjeenk Willink & zoon. OCLC 962401170.
- Mayer, Richard (29 May 2016). "Three Genres of Game Research". Design ToolBox. Retrieved 17 June 2016.
- Konzack, Lars (2007). Williams, J. Patrick; Smith, Jonas Heide (eds.). Rhetorics of Computer and Video Game Research. The Players' Realm: Studies on the Culture of Video Games and Gaming. ISBN 9780786428328.
- Frasca, Gonzalo (1999). "Ludology Meets Narratology: Similitude and Differences between (video)games and Narrative". Parnasso. 3.
- Juul, Jesper (2004-02-22). "The definitive history of games and stories, ludology and narratology". The Ludologist. Retrieved 2018-03-30.
- Feshbach, Seymour; Singer, Robert D. (1971). Television and Aggression; an Experimental Field Study. San Francisco: Jossey-Bass. OCLC 941871879.
- Anderson, C. A.; Bushman, B. J. (2001). "Effects of Violent Video Games on Aggressive Behavior, Aggressive Cognition, Aggressive Affect, Physiological Arousal, and Prosocial Behavior: A Meta-Analytic Review of the Scientific Literature". Psychological Science. 12 (5): 353–59. doi:10.1111/1467-9280.00366. PMID 11554666. S2CID 14987425.
- Ferguson, Christopher J.; et al. (2008). "Violent Video Games and Aggression: Causal Relationship or Byproduct of Family Violence and Intrinsic Violence Motivation?". Criminal Justice and Behavior. 35 (3): 311–32. CiteSeerX 10.1.1.494.950. doi:10.1177/0093854807311719. S2CID 7145392.
- Anderson, C.A.; Dill, K.E. (2000). "Video games and aggressive thoughts, feelings, and behaviour in the laboratory and in life". Journal of Personality and Social Psychology. 78 (4): 772–790. CiteSeerX 10.1.1.1006.1548. doi:10.1037/0022-35184.108.40.2062. PMID 10794380.
- Kim, Amy Jo (1 August 2011). "Smart Gamification". SlideShare. Retrieved 8 March 2014.
- McGonigal, Jane (2011). Reality is broken: Why games make us better and how they can change the world. New York: Penguin. ISBN 9780099540281.
- Borowiecki, Karol J.; Prieto-Rodriguez, Juan (2015). "Video Games Playing: A Substitute for Cultural Consumptions?" (PDF). Journal of Cultural Economics. 39 (3): 239–58. CiteSeerX 10.1.1.676.2381. doi:10.1007/s10824-014-9229-y. S2CID 49572910.
- Crawford, Garry (2012). Video Gamers. London: Routledge. ISBN 9780415563680.
- Lofgren, Eric T.; Fefferman, Nina H. (2007-09-01). "The untapped potential of virtual game worlds to shed light on real world epidemics". The Lancet Infectious Diseases. 7 (9): 625–629. doi:10.1016/S1473-3099(07)70212-8. ISSN 1473-3099. PMID 17714675.
- "A clash between game and narrative". www.jesperjuul.net. Retrieved 2018-03-30.
- Aarseth, Espen (2001). "Computer Game Studies, Year One". Game Studies. 1 (1).
- Konzack, Lars (2002). "Computer Game Criticism: A Method for Computer Game Analysis" (PDF). CGDC Conference Proceedings: 89–100 – via DiGRA.
- Costikyan, Greg (2002). "I Have No Words & I Must Design: Toward a Critical Vocabulary for Games" (PDF). CGDC Conference Proceedings: 9–34 – via DiGRA.
- "Ludology". www.ludology.org. Retrieved 2018-03-30.
- Crawford, Garry; Gosling, Victoria K. (2009). "More than a game: sports-themed video games and player narratives". Sociology of Sport Journal. 26: 50–66. doi:10.1123/ssj.26.1.50. S2CID 18926419.
- Casvean, Tulia Maria (2016). "What is Game Studies Anyway? Legitimacy of Games Studies Beyond Ludo-centrism vs. Narrato-centrism". Romanian Journal of Journalism & Communication. Retrieved December 7, 2019.
- Frasca, Gonzalo (2003). "Ludologists love stories, too: note from a debate that never took place" (PDF). Typepad. Retrieved December 7, 2019.
- Kokonis, Michalis (2014). "Intermediality between Games and Fiction: The "Ludology vs. Narratology" Debate in Computer Game Studies: A Response to Gonzalo Frasca" (PDF). Acta Univ. Sapientiae, Film and Media Studies. Retrieved December 7, 2019.
- Grau, Oliver (2004). Virtual Art. MIT Press. ISBN 978-0-262-57223-1.
- Gazzaley, Adam (4 September 2013). "NeuroRacer Study". University of California, San Francisco: Gazzaley Lab. Archived from the original on 8 September 2013. Retrieved 6 September 2013.
- Kissell, Margo (17 March 2016). "AARP teams up with students designing games for 50 plus". Miami University. Retrieved 1 March 2018.
- Iversen 2014.
- De Schutter & Vanden Abeele 2015.
- Plumer, Brad (28 September 2012). "The Economics of Video Games". The Washington Post. Retrieved 1 March 2018.
- Suderman, Peter (June 2014). "A Multiplayer Game Environment Is Actually a Dream Come True for an Economist". Reason. Retrieved 1 March 2018.
- Castronova, Edward (July 2002). "On Virtual Economies". CESifo Working Paper Series. 752. SSRN 338500 – via SSRN.
- Edward., Castronova (2005). Synthetic worlds: the business and culture of online games. Chicago: University of Chicago Press. ISBN 9780226096278. OCLC 58648183.
- Gray, Peter (20 February 2015). "Cognitive Benefits of Playing Video Games". Psychology Today. Retrieved 1 March 2018.
- Granic, Isabela; Lobel, Adam; Engels, Rutger C. M. E. (2014). "The Benefits of Playing Video Games" (PDF). American Psychologist. 69 (1): 66–78. CiteSeerX 10.1.1.697.8245. doi:10.1037/a0034857. PMID 24295515.
- "Attendance and Stats - Gamescom Wiki Guide - IGN". IGN. 27 August 2018. Retrieved 14 May 2019.
- Willingham, AJ (27 August 2018). "What is eSports? A look at an explosive billion-dollar industry". CNN. Retrieved December 7, 2019.
- Newzoo (April 2014). "The eSport Effect: Gamers and the Influence of Live Events". Eventbrite. Retrieved December 7, 2019.
- Shaw, Adrienne (April 8, 2016). "What Is Video Game Culture? Cultural Studies and Game Studies". SAGE. CiteSeerX 10.1.1.867.1902. Cite journal requires
- Muriel, Daniel; Crawford, Garry (2019). Video Games as Culture. London: Routledge. ISBN 9781138655119.
- "2019 Essential Facts About the Computer and Video Game Industry". Entertainment Software Association. May 2019. Retrieved 14 May 2019.
- Aarseth, Espen J. (1997). Cybertext: Perspectives on Ergodic Literature. Johns Hopkins University Press. ISBN 978-0-8018-5579-5.
- Barr, Matthew (2017). "Video games can develop graduate skills in higher education students: A randomised trial". Computers & Education. 113: 86–97. doi:10.1016/j.compedu.2017.05.016.
- Balkin, Jack M.; Beth Simone Noveck (2006). The State of Play: Law, Games, and Virtual Worlds. New York: New York University Press. ISBN 978-0-8147-9971-0.
- Bandura, A (1986). Social Foundations of Thought and Action. Englewood Cliffs, NJ: Prentice-Hall. ISBN 978-0-13-815614-5.
- Bissel, Tom (2011). Extra Lives: Why Video Games Matter. Vintage. ISBN 978-0-307-47431-5.
- Bogost, Ian (2006). Unit Operations: an Approach to Videogame Criticism. MIT Press. ISBN 978-0-262-02599-7.
- Bolter, Jay David; Richard Grusin (2000). Remediation: Understanding New Media. MIT Press. ISBN 978-0-262-52279-3.
- Clune, Michael W. (2015). Gamelife: A Memoir. Farrar, Straus and Giroux. ISBN 978-0-865-47828-2.
- Crawford, Garry (2012). Video Gamers. Routledge. ISBN 978-0-415-55620-0.
- De Schutter, Bob; Vanden Abeele, Vero (2015). "Towards a Gerontoludic Manifesto". Anthropology & Aging. 36 (2): 112–120. doi:10.5195/aa.2015.104.
- Iversen, Sara Mosberg (2014). "Play and Productivity: The Constitution of Ageing Adults in Research on Digital Games". Games and Culture. 11 (1–2): 7–27. doi:10.1177/1555412014557541. S2CID 147221763.
- Ferguson, Christopher J. (2010). "Blazing Angels or Resident Evil? Can Violent Video Games Be a Force for Good?" (PDF). Review of General Psychology. 14 (2): 68–81. CiteSeerX 10.1.1.360.3176. doi:10.1037/a0018941. S2CID 3053432.
- Galloway, Alexander R. (2006). Gaming: Essays on Algorithmic Culture. University of Minnesota Press. ISBN 978-0-8166-4850-4.
- Garrelts, Nate (2005). Digital Gameplay: Essays on the Nexus of Game and Gamer. Jefferson, North Carolina, United States: McFarland. ISBN 9780786422920.
- Grau, Oliver (2004). Virtual Art. MIT Press. ISBN 978-0-262-57223-1.
- Grau, Oliver (ed.) (2007). MediaArtHistories. MIT Press. ISBN 978-0-262-07279-3.CS1 maint: extra text: authors list (link)
- Griffiths, M. (1999). "Violent video games and aggression: A review of the literature" (PDF). Aggression and Violent Behavior. 4 (2): 203–212. doi:10.1016/s1359-1789(97)00055-4. Archived (PDF) from the original on 26 November 2013.
- Hanson, Matt (2004). The End of Celluloid: Film futures in the digital age. Rotovision. ISBN 978-2-88046-783-8.
- Harrigan, Pat and; Noah Wardrip-Fruin (2007). Second Person: Role-Playing and Story in Games and Playable Media. MIT Press. ISBN 978-0-262-08356-0.
- Juul, Jesper (July 2001). "Games Telling Stories: A brief note on games & Narratives". Games Studies. 1 (1).
- Juul, Jesper (2006). Half-Real: Video Games between Real Rules and Fictional Worlds. MIT Press. ISBN 978-0-262-10110-3.
- King, Brad; John Borland (2003). Dungeons and Dreamers: The Rise of Computer Game Culture from Geek to Chic. McGraw-Hill. ISBN 978-0-07-222888-5.
- Malone, T. W.; Lepper, M. R. (1987). "Making learning fun: A taxonomy of intrinsic motivation for learning". In Snow, Richard E.; Farr, Marshall J. (eds.). Aptitude, Learning, and Instruction, Volume 3: Conative and Affective Process Analyses. Hillsdale, NJ: L. Erlbaum Associates. pp. 1–2. ISBN 978-0898597219.
- Manovich, Lev (2001). The Language of New Media. MIT Press. ISBN 978-0-262-63255-3.
- Mäyrä, Frans (2008). An Introduction to Game Studies: Games in Culture. Sage Publications. ISBN 978-1-4129-3445-9.
- McAllister, Ken S. (2004). Gamework: Language, Power, and Computer Game Culture. University of Alabama Press. ISBN 978-0-8173-5420-6.
- Newman, James (2004). Videogames. Routledge. ISBN 978-0-415-28192-8.
- Ruggill, Judd Ethan and Ken S. McAllister (2011). Gaming Matters: Art, Science, Magic, and the Computer Game Medium. University of Alabama Press. ISBN 978-0-8173-1737-9.
- Rutter, Jason; Jo Bryce (2006). Understanding Digital Games. Sage. ISBN 978-1-4129-0033-1. (Table of contents and contributing authors), (Introduction to collection)
- Ryan, Marie-Laure (2001). Narrative as Virtual Reality. Johns Hopkins University Press. ISBN 978-0-8018-6487-2.
- Salen, Katie; Eric Zimmerman (2003). Rules of Play: Game Design Fundamentals. MIT Press. ISBN 978-0-262-24045-1.
- Salen, Katie; Eric Zimmerman (2005). The Game Design Reader: A Rules of Play Anthology. MIT Press. ISBN 978-0-262-19536-2.
- Sisler, Vit (2008). "Digital Arabs: Representation in Video Games". European Journal of Cultural Studies. 11 (2).
- Wardrip-Fruin, Noah; Pat Harrigan (2004). First Person: New Media as Story, Performance, and Game. MIT Press. ISBN 978-0-262-73175-1.
- Wolf, Mark J. P. (2001). The Medium of the Video Game. University of Texas Press. ISBN 978-0-292-79150-3.
- Wolf, Mark J. P.; Bernard Perron (2003). The Video Game Theory Reader. Routledge. ISBN 978-0-415-96579-8.
- Wolf, Mark J. P.; Bernard Perron (2014). The Routledge Companion to Video Game Studies. Routledge. ISBN 978-1-136-29050-3.