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Two girls playing a driving-themed video arcade game in 2007
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Video games

A video game is an electronic game that involves human interaction with a user interface to generate visual feedback on a video device such as a TV screen or computer monitor. The word video in video game traditionally referred to a raster display device, but as of the 2000s, it implies any type of display device that can produce two- or three-dimensional images. Some theorists categorize video games as an art form, but this designation is controversial.

The electronic systems used to play video games are known as platforms; examples of these are personal computers and video game consoles. These platforms range from large mainframe computers to small handheld computing devices. Specialized video games such as arcade games, in which the video game components are housed in a large, coin-operated chassis, while common in the 1980s in video arcades, have gradually declined in use due to the widespread availability of affordable home video game consoles (e.g., PlayStation 4 and Xbox One) and video games on desktop and laptop computers and smartphones.

The input device used for games, the game controller, varies across platforms. Common controllers include gamepads, joysticks, mouses, keyboards, the touchscreens of mobile devices and buttons. Players typically view the game on a video screen or television and there are often game sounds from loudspeakers. Some games in the 2000s include haptic, vibration-creating effects, force feedback peripherals and virtual reality headsets. In the 2010s, the video game industry is of increasing commercial importance, with growth driven particularly by the emerging Asian markets and mobile games, which are played on smartphones. As of 2015, video games generated sales of USD 74 billion annually worldwide, and were the third-largest segment in the U.S. entertainment market, behind broadcast and cable TV.


Tennis for Two, an early analog computer game that used an oscilloscope for a display

Early games used interactive electronic devices with various display formats. The earliest example is from 1947—a "Cathode ray tube Amusement Device" was filed for a patent on 25 January 1947, by Thomas T. Goldsmith Jr. and Estle Ray Mann, and issued on 14 December 1948, as U.S. Patent 2455992.[1] Inspired by radar display technology, it consisted of an analog device that allowed a user to control a vector-drawn dot on the screen to simulate a missile being fired at targets, which were drawings fixed to the screen.[2] Other early examples include: The Nimrod computer at the 1951 Festival of Britain; OXO a tic-tac-toe Computer game by Alexander S. Douglas for the EDSAC in 1952; Tennis for Two, an electronic interactive game engineered by William Higinbotham in 1958; Spacewar!, written by MIT students Martin Graetz, Steve Russell, and Wayne Wiitanen's on a DEC PDP-1 computer in 1961; and the hit ping pong-style Pong, a 1972 game by Atari. Each game used different means of display: NIMROD used a panel of lights to play the game of Nim,[3] OXO used a graphical display to play tic-tac-toe[4] Tennis for Two used an oscilloscope to display a side view of a tennis court,[2] and Spacewar! used the DEC PDP-1's vector display to have two spaceships battle each other.[5]

In 1971, Computer Space, created by Nolan Bushnell and Ted Dabney, was the first commercially sold, coin-operated video game. It used a black-and-white television for its display, and the computer system was made of 74 series TTL chips.[6] The game was featured in the 1973 science fiction film Soylent Green. Computer Space was followed in 1972 by the Magnavox Odyssey, the first home console. Modeled after a late 1960s prototype console developed by Ralph H. Baer called the "Brown Box", it also used a standard television.[2][7] These were followed by two versions of Atari's Pong; an arcade version in 1972 and a home version in 1975 that dramatically increased video game popularity.[8] The commercial success of Pong led numerous other companies to develop Pong clones and their own systems, spawning the video game industry.[9]

A flood of Pong clones eventually led to the video game crash of 1977, which came to an end with the mainstream success of Taito's 1978 shooter game Space Invaders,[10] marking the beginning of the golden age of arcade video games and inspiring dozens of manufacturers to enter the market.[10][11] The game inspired arcade machines to become prevalent in mainstream locations such as shopping malls, traditional storefronts, restaurants, and convenience stores.[12] The game also became the subject of numerous articles and stories on television and in newspapers and magazines, establishing video gaming as a rapidly growing mainstream hobby.[13][14] Space Invaders was soon licensed for the Atari VCS (later known as Atari 2600), becoming the first "killer app" and quadrupling the console's sales.[15] This helped Atari recover from their earlier losses,[16] and in turn the Atari VCS revived the home video game market during the second generation of consoles, up until the North American video game crash of 1983.[17] The home video game industry was revitalized shortly afterwards by the widespread success of the Nintendo Entertainment System,[18] which marked a shift in the dominance of the video game industry from the United States to Japan during the third generation of consoles.[19]



The term "platform" refers to the specific combination of electronic components or computer hardware which, in conjunction with software, allows a video game to operate.[20] The term "system" is also commonly used. The distinctions below are not always clear and there may be games that bridge one or more platforms. In addition to personal computers, there are other devices which have the ability to play games but are not dedicated video game machines, such as smartphones, PDAs and graphing calculators.


In common use a "PC game" refers to a form of media that involves a player interacting with a personal computer connected to a video monitor. Personal computers are not dedicated game platforms, so there may be differences running the same game in different hardwares, also the openness allows some features to developers like reduced software cost,[21] increased flexibility, increased innovation, emulation, creation of modifications ("mods"), open hosting for online gaming (in which a person plays a video game with people who are in a different household) and others.


A "console game" is played on a specialized electronic device that connects to a common television set or composite video monitor, unlike PCs, a console is a dedicated platform, it is manufactured by a specific company. Usually runs only games developed for it, or games from other platform made by the same company, but never its direct competitor, even if the same game is available on different platforms. It often comes with a specific game controller.


A "handheld" gaming device is a small, self-contained electronic device that is portable and can be held in a user's hands. It features the console, a small screen, speakers and buttons, joystick or other game controllers in a single unit. Like consoles, handhelds are dedicated platforms, and share almost the same characteristics. Handheld hardware usually is less powerful than PC or console hardwares. Some handheld games from the late 1970s and early 1980s could only play one game. In the 1990s and 2000s, a number of handheld games used cartridges, which enabled them to be used to play many different games.


A horror-themed arcade game in which players use a light gun.

"Arcade game" generally refers to a game played on an even more specialized type of electronic device that is typically designed to play only one game and is encased in a special, large coin-operated cabinet which has one built-in console, controllers (joystick, buttons, etc.), a CRT screen, and audio amplifier and speakers. Arcade games often have brightly painted logos and images relating to the theme of the game. While most arcade games are housed in a vertical cabinet, which the user typically stands in front of to play, some arcade games use a tabletop approach, in which the display screen is housed in a table-style cabinet with a see-through table top. With table-top games, the users typically sit to play. In the 1990s and 2000s, some arcade games offered players a choice of multiple games. In the 1980s, video arcades were businesses in which game players could use a number of arcade video games. In the 2010s, there are far fewer video arcades, but some movie theaters and family entertainment centers still have them.

Web browser

The web browser has also established itself as platform in its own right in the 2000s, while providing a cross-platform environment for video games designed to be played on a wide spectrum of hardware from personal computers and tablet computers to smartphones. This in turn has generated new terms to qualify classes of web browser-based games. These games may be identified based on the website that they appear, such as with "Facebook" games. Others are named based on the programming platform used to develop them, such as Java and Flash games.


Main article: Video game genre

A video game, like most other forms of media, may be categorized into genres. Video game genres are used to categorize video games based on their gameplay interaction rather than visual or narrative differences.[22][23] A video game genre is defined by a set of gameplay challenges and are classified independent of their setting or game-world content, unlike other works of fiction such as films or books. For example, a shooter game is still a shooter game, regardless of whether it takes place in a fantasy world or in outer space.[24][25]

Because genres are dependent on content for definition, genres have changed and evolved as newer styles of video games have come into existence. Ever advancing technology and production values related to video game development have fostered more lifelike and complex games which have in turn introduced or enhanced genre possibilities (e.g., virtual pets), pushed the boundaries of existing video gaming or in some cases add new possibilities in play (such as that seen with titles specifically designed for devices like Sony's EyeToy). Some genres represent combinations of others, such as massively multiplayer online role-playing games, or, more commonly, MMORPGs. It is also common to see higher level genre terms that are collective in nature across all other genres such as with action, music/rhythm or horror-themed video games.[citation needed]


Casual games

Main article: Casual game

Casual games derive their name from their ease of accessibility, simple to understand gameplay and quick to grasp rule sets. Additionally, casual games frequently support the ability to jump in and out of play on demand. Casual games as a format existed long before the term was coined and include video games such as Solitaire or Minesweeper which can commonly be found pre-installed with many versions of the Microsoft Windows operating system. Examples of genres within this category are match three, hidden object, time management, puzzle or many of the tower defense style games. Casual games are generally available through app stores and online retailers such as PopCap, Zylom and GameHouse or provided for free play through web portals such as Newgrounds. While casual games are most commonly played on personal computers, phones or tablets, they can also be found on many of the on-line console system download services (e.g., the PlayStation Network, WiiWare or Xbox Live).

Serious games

Main article: Serious game

Serious games are games that are designed primarily to convey information or a learning experience of some sort to the player. Some serious games may even fail to qualify as a video game in the traditional sense of the term. Educational software does not typically fall under this category (e.g., touch typing tutors, language learning, etc.) and the primary distinction would appear to be based on the title's primary goal as well as target age demographics. As with the other categories, this description is more of a guideline than a rule.

Serious games are games generally made for reasons beyond simple entertainment and as with the core and casual games may include works from any given genre, although some such as exergames, educational games, or propaganda games may have a higher representation in this group due to their subject matter. These games are typically designed to be played by professionals as part of a specific job or for skill set improvement. They can also be created to convey social-political awareness on a specific subject.

One of the longest running serious games franchises would be Microsoft Flight Simulator first published in 1982 under that name. The United States military uses virtual reality based simulations, such as VBS1 for training exercises,[26] as do a growing number of first responder roles (e.g., police, fire fighter, EMT).[27] One example of a non-game environment utilized as a platform for serious game development would be the virtual world of Second Life, which is currently used by several United States governmental departments (e.g., NOAA, NASA, JPL), Universities (e.g., Ohio University, MIT) for educational and remote learning programs[28] and businesses (e.g., IBM, Cisco Systems) for meetings and training.[29]

Tactical media in video games plays a crucial role in making a statement or conveying a message on important relevant issues. This form of media allows for a broader audience to be able to receive and gain access to certain information that otherwise may not have reached such people. An example of tactical media in video games would be newsgames. These are short games related to contemporary events designed to illustrate a point.[30] For example, Take Action Games is a game studio collective that was co-founded by Susana Ruiz and has made successful serious games. Some of these games include Darfur is Dying, Finding Zoe, and In The Balance. All of these games bring awareness to important issues and events in an intelligent and well thought out manner.[31]

Educational games

On 23 September 2009, U.S. President Barack Obama launched a campaign called "Educate to Innovate" aimed at improving the technological, mathematical, scientific and engineering abilities of American students. This campaign states that it plans to harness the power of interactive games to help achieve the goal of students excelling in these departments.[32][33] This campaign has stemmed into many new opportunities for the video game realm and has contributed to many new competitions. Some of these competitions include the Stem National Video Game Competition and the Imagine Cup.[34][35] Both of these examples are events that bring a focus to relevant and important current issues that are able to be addressed in the sense of video games to educate and spread knowledge in a new form of media. uses games to entice the user to learn about information pertaining to the Nobel prize achievements while engaging in a fun to play video game.[36] There are many different types and styles of educational games all the way from counting to spelling to games for kids and games for adults. Some other games do not have any particular targeted audience in mind and intended to simply educate or inform whoever views or plays the game.


Main article: Game controller
A North American Super NES game controller from the early 1990s.

Video game can use several types of input devices to translate human actions to a game, the most common game controllers are keyboard and mouse for "PC games, consoles usually come with specific gamepads, handheld consoles have built in buttons. Other game controllers are commonly used for specific games like racing wheels, light guns or dance pads. Digital cameras can also be used as game controllers capturing movements of the body of the player.


Main article: Game development
Developers use various tools to create video games. Here an editor is fine-tuning the virtual camera system.

Video game development and authorship, much like any other form of entertainment, is frequently a cross-disciplinary field. Video game developers, as employees within this industry are commonly referred, primarily include programmers and graphic designers. Over the years this has expanded to include almost every type of skill that one might see prevalent in the creation of any movie or television program, including sound designers, musicians, and other technicians; as well as skills that are specific to video games, such as the game designer. All of these are managed by producers.

In the early days of the industry, it was more common for a single person to manage all of the roles needed to create a video game. As platforms have become more complex and powerful in the type of material they can present, larger teams have been needed to generate all of the art, programming, cinematography, and more. This is not to say that the age of the "one-man shop" is gone, as this is still sometimes found in the casual gaming and handheld markets,[37] where smaller games are prevalent due to technical limitations such as limited RAM or lack of dedicated 3D graphics rendering capabilities on the target platform (e.g., some cellphones and PDAs).[citation needed]

With the growth of the size of development teams in the industry, the problem of cost has increased. Development studios need to be able to pay their staff a competitive wage in order to attract and retain the best talent, while publishers are constantly looking to keep costs down in order to maintain profitability on their investment. Typically, a video game console development team can range in sizes of anywhere from 5 to 50 people, with some teams exceeding 100. In May 2009, one game project was reported to have a development staff of 450.[38] The growth of team size combined with greater pressure to get completed projects into the market to begin recouping production costs has led to a greater occurrence of missed deadlines, rushed games and the release of unfinished products.[citation needed]

Downloadable content

Main article: Downloadable content

A phenomenon of additional game content at a later date, often for additional funds, began with digital video game distribution known as downloadable content (DLC). Developers can use digital distribution to issue new storylines after the main game is released, such as Rockstar Games with Grand Theft Auto IV (The Lost and Damned and The Ballad of Gay Tony), or Bethesda with Fallout 3 and its expansions. New gameplay modes can also become available, for instance, Call of Duty and its zombie modes,[39][40][41] a multiplayer mode for Mushroom Wars or a higher difficulty level for Metro: Last Light. Smaller packages of DLC are also common, ranging from better in-game weapons (Dead Space, Just Cause 2), character outfits (LittleBigPlanet, Minecraft), or new songs to perform (SingStar, Rock Band, Guitar Hero).


Main article: Mod (computer gaming)

Many games produced for the PC are designed such that technically oriented consumers can modify the game. These mods can add an extra dimension of replayability and interest. Developers such as id Software, Valve Corporation, Crytek, Bethesda, Epic Games and Blizzard Entertainment ship their games with some of the development tools used to make the game, along with documentation to assist mod developers. The Internet provides an inexpensive medium to promote and distribute mods, and they may be a factor in the commercial success of some games.[42] This allows for the kind of success seen by popular mods such as the Half-Life mod Counter-Strike.


Cheating in computer games may involve cheat codes and hidden spots implemented by the game developers,[43][44] modification of game code by third parties,[45][46] or players exploiting a software glitch. Modifications are facilitated by either cheat cartridge hardware or a software trainer.[45] Cheats usually make the game easier by providing an unlimited amount of some resource; for example weapons, health, or ammunition; or perhaps the ability to walk through walls.[44][45] Other cheats might give access to otherwise unplayable levels or provide unusual or amusing features, like altered game colors or other graphical appearances.


Main article: Glitch

Software errors not detected by software testers during development can find their way into released versions of computer and video games. This may happen because the glitch only occurs under unusual circumstances in the game, was deemed too minor to correct, or because the game development was hurried to meet a publication deadline. Glitches can range from minor graphical errors to serious bugs that can delete saved data or cause the game to malfunction. In some cases publishers will release updates (referred to as patches) to repair glitches. Sometimes a glitch may be beneficial to the player; these are often referred to as exploits.

Easter eggs

Easter eggs are hidden messages or jokes left in games by developers that are not part of the main game.[47] Easter eggs are secret responses that occur as a result of an undocumented set of commands. The results can vary from a simple printed message or image, to a page of programmer credits or a small videogame hidden inside an otherwise serious piece of software. Videogame cheat codes are a specific type of Easter egg, in which entering a secret command will unlock special powers or new levels for the player.[48][49]


Main article: Game studies

Although departments of computer science have been studying the technical aspects of video games for years, theories that examine games as an artistic medium are a relatively recent development in the humanities. The two most visible schools in this emerging field are ludology and narratology. Narrativists approach video games in the context of what Janet Murray calls "Cyberdrama". That is to say, their major concern is with video games as a storytelling medium, one that arises out of interactive fiction. Murray puts video games in the context of the Holodeck, a fictional piece of technology from Star Trek, arguing for the video game as a medium in which we get to become another person, and to act out in another world.[50] This image of video games received early widespread popular support, and forms the basis of films such as Tron, eXistenZ and The Last Starfighter.

Ludologists break sharply and radically from this idea. They argue that a video game is first and foremost a game, which must be understood in terms of its rules, interface, and the concept of play that it deploys. Espen J. Aarseth argues that, although games certainly have plots, characters, and aspects of traditional narratives, these aspects are incidental to gameplay. For example, Aarseth is critical of the widespread attention that narrativists have given to the heroine of the game Tomb Raider, saying that "the dimensions of Lara Croft's body, already analyzed to death by film theorists, are irrelevant to me as a player, because a different-looking body would not make me play differently... When I play, I don't even see her body, but see through it and past it."[51] Simply put, ludologists reject traditional theories of art because they claim that the artistic and socially relevant qualities of a video game are primarily determined by the underlying set of rules, demands, and expectations imposed on the player.

While many games rely on emergent principles, video games commonly present simulated story worlds where emergent behavior occurs within the context of the game. The term "emergent narrative" has been used to describe how, in a simulated environment, storyline can be created simply by "what happens to the player."[52] However, emergent behavior is not limited to sophisticated games. In general, any place where event-driven instructions occur for AI in a game, emergent behavior will exist. For instance, take a racing game in which cars are programmed to avoid crashing, and they encounter an obstacle in the track: the cars might then maneuver to avoid the obstacle causing the cars behind them to slow and/or maneuver to accommodate the cars in front of them and the obstacle. The programmer never wrote code to specifically create a traffic jam, yet one now exists in the game.


Emulators are software that allow games to run on a different platform from the original hardware by replicate the behavior of a console, they are found in PCs, smartphones and other consoles. Emulators emerged in the early 1990s, they are generally used to play old games, hack existing games, translate unreleased games in an especific region or add enhanced features to games like improved graphics, speed up or down, bypass regional lockouts, or online multiplayer support. In the United States, emulation without permission of the publisher is illegal.

Due to great demand, began to emerge emulation officially, the first case was the Virtual Console on the Nintendo Wii, it was one of Nintendo's shares to prevent piracy.[53] In November 2015, Microsoft lanched backwards compatibility of Xbox 360 games on Xbox One console via emulation.[54] Also, Sony announced relaunching PS2 games on PS4 via emulation.[55]

Social aspects


The November 2005 Nielsen Active Gamer Study, taking a survey of 2,000 regular gamers, found that the U.S. games market is diversifying. The age group among male players has expanded significantly in the 25–40 age group. For casual online puzzle-style and simple mobile cell phone games, the gender divide is more or less equal between men and women. More recently there has been a growing segment of female players engaged with the aggressive style of games historically considered to fall within traditionally male genres (e.g., first-person shooters). According to the ESRB, almost 41% of PC gamers are women.[56] Participation among African-Americans is even lower. One survey of over 2000 game developers returned responses from only 2.5% who identified as black.[57]

When comparing today's industry climate with that of 20 years ago, women and many adults are more inclined to be using products in the industry. While the market for teen and young adult men is still a strong market, it is the other demographics which are posting significant growth. The Entertainment Software Association (ESA) provides the following summary for 2011 based on a study of almost 1,200 American households carried out by Ipsos MediaCT:[58]

  • The average gamer is 30 years old and has been playing for 12 years. Eighty-two percent of gamers are 18 years of age or older.
  • Forty-two percent of all players are women and women over 18 years of age are one of the industry's fastest growing demographics.
  • Twenty-nine percent of game players are over the age of 50, an increase from nine percent in 1999.
  • Sixty-five percent of gamers play games with other gamers in person.
  • Fifty-five percent of gamers play games on their phones or handheld device.

A 2006 academic study, based on a survey answered by 10,000 gamers, identified the gaymers (gamers that identify as gay) as a demographic group.[59][60][61] A follow-up survey in 2009 studied the purchase habits and content preferences of people in the group.[62][63][64]

Based on the study by NPD group in 2011, approximately 91 percent of children aged 2–17 play games.[65]


Main article: Video game culture


Video gaming has traditionally been a social experience. Multiplayer video games are those that can be played either competitively, sometimes in Electronic Sports, or cooperatively by using either multiple input devices, or by hotseating. Tennis for Two, arguably the first video game, was a two player game, as was its successor Pong. The first commercially available game console, the Magnavox Odyssey, had two controller inputs.

Since then, most consoles have been shipped with two or four controller inputs. Some have had the ability to expand to four, eight or as many as 12 inputs with additional adapters, such as the Multitap. Multiplayer arcade games typically feature play for two to four players, sometimes tilting the monitor on its back for a top-down viewing experience allowing players to sit opposite one another.

Many early computer games for non-PC descendant based platforms featured multiplayer support. Personal computer systems from Atari and Commodore both regularly featured at least two game ports. PC-based computer games started with a lower availability of multiplayer options because of technical limitations. PCs typically had either one or no game ports at all. Network games for these early personal computers were generally limited to only text based adventures or MUDs that were played remotely on a dedicated server. This was due both to the slow speed of modems (300-1200-bit/s), and the prohibitive cost involved with putting a computer online in such a way where multiple visitors could make use of it. However, with the advent of widespread local area networking technologies and Internet based online capabilities, the number of players in modern games can be 32 or higher, sometimes featuring integrated text and/or voice chat. Massively multiplayer online game (MMOs) can offer extremely high numbers of simultaneous players; Eve Online set a record with 65,303 players on a single server in 2013.[66]

Behavioral effects

It has been shown that action video game players have better hand–eye coordination and visuo-motor skills, such as their resistance to distraction, their sensitivity to information in the peripheral vision and their ability to count briefly presented objects, than nonplayers.[67]

Researchers found that such enhanced abilities could be acquired by training with action games, involving challenges that switch attention between different locations, but not with games requiring concentration on single objects. It has been suggested by a few studies that online/offline video gaming can be used as a therapeutic tool in the treatment of different mental health concerns.[which?]

In Steven Johnson's book, Everything Bad Is Good for You, he argues that video games in fact demand far more from a player than traditional games like Monopoly. To experience the game, the player must first determine the objectives, as well as how to complete them. They must then learn the game controls and how the human-machine interface works, including menus and HUDs. Beyond such skills, which after some time become quite fundamental and are taken for granted by many gamers, video games are based upon the player navigating (and eventually mastering) a highly complex system with many variables. This requires a strong analytical ability, as well as flexibility and adaptability. He argues that the process of learning the boundaries, goals, and controls of a given game is often a highly demanding one that calls on many different areas of cognitive function. Indeed, most games require a great deal of patience and focus from the player, and, contrary to the popular perception that games provide instant gratification, games actually delay gratification far longer than other forms of entertainment such as film or even many books.[68] Some research suggests video games may even increase players' attention capacities.[69]

Learning principles found in video games have been identified as possible techniques with which to reform the U.S. education system.[70] It has been noticed that gamers adopt an attitude while playing that is of such high concentration, they do not realize they are learning, and that if the same attitude could be adopted at school, education would enjoy significant benefits.[71] Students are found to be "learning by doing" while playing video games while fostering creative thinking.[72]

The U.S. Army has deployed machines such as the PackBot and UAV vehicles, which make use of a game-style hand controller to make it more familiar for young people.[73]

According to research discussed at the 2008 Convention of the American Psychological Association, certain types of video games can improve the gamers' dexterity as well as their ability to problem-solve. A study of 33 laparoscopic surgeons found that those who played video games were 27 percent faster at advanced surgical procedures and made 37 percent fewer errors compared to those who did not play video games. A second study of 303 laparoscopic surgeons (82 percent men; 18 percent women) also showed that surgeons who played video games requiring spatial skills and hand dexterity and then performed a drill testing these skills were significantly faster at their first attempt and across all 10 trials than the surgeons who did not play the video games first.[74]

The research showing benefits from action games has been questioned due to methodological shortcomings, such as recruitment strategies and selection bias, potential placebo effects, and lack of baseline improvements in control groups.[75] In addition, many of the studies are cross-sectional, and of the longitudinal interventional trials, not all have found effects.[75] A response to this pointed out that the skill improvements from action games are more broad than predicted, such as mental rotation, which is not a common task in action games.[76]

Action gamers are not only better at ignoring distractions, but also at focusing on the main task.[77]

Objections to video games

Like other media, such as rock music (notably heavy metal music), video games have been the subject of objections, controversies and censorship, for instance because of depictions of violence, sexual themes, alcohol, tobacco and other drugs, propaganda, profanity or advertisements. Critics of video games include parents' groups, politicians, religious groups, scientists and other advocacy groups. Claims that some video games cause addiction or violent behavior continue to be made and to be disputed.[78]

There have been a number of societal and scientific arguments about whether the content of video games change the behavior and attitudes of a player, and whether this is reflected in video game culture overall. Since the early 1980s, advocates of video games have emphasized their use as an expressive medium, arguing for their protection under the laws governing freedom of speech and also as an educational tool. Detractors argue that video games are harmful and therefore should be subject to legislative oversight and restrictions. The positive and negative characteristics and effects of video games are the subject of scientific study. Results of investigations into links between video games and addiction, aggression, violence, social development, and a variety of stereotyping and sexual morality issues are debated.[79]

Possible benefits

In spite of the negative effects of video games, certain studies indicate that they may have value in terms of academic performance, perhaps because of the skills that are developed in the process. “When you play ... games you’re solving puzzles to move to the next level and that involves using some of the general knowledge and skills in maths, reading and science that you’ve been taught during the day,” said Alberto Posso an Associate Professor at the Royal Melbourne Institute of Technology, after analysing data from the results of standardized testing completed by over 12,000 high school students across Australia. As summarized by The Guardian,[80] the study [published in the International Journal of Communication], "found that students who played online games almost every day scored 15 points above average in maths and reading tests and 17 points above average in science." However, the reporter added an important comment that was not provided by some of the numerous Web sites that published a brief summary of the Australian study study: "[the] methodology cannot prove that playing video games were the cause of the improvement." The Guardian also reported that a Columbia University study indicated that extensive video gaming by students in the 6 to 11 age group provided a greatly increased chance of high intellectual functioning and overall school competence.

In an interview with CNN, Edward Castronova, a professor of Telecommunications at Indiana University Bloomington said he was not surprised by the outcome of the Australian study but also discussed the issue of causal connection. "Though there is a link between gaming and higher math and science scores, it doesn't mean playing games caused the higher scores. It could just be that kids who are sharp are looking for a challenge, and they don't find it on social media, and maybe they do find it on board games and video games," he explained.[81]

Ratings and censorship


The Entertainment Software Rating Board (ESRB) gives video games maturity ratings based on their content. For example, a game might be rated T for Teen if the game contained obscene words or violence. If a game contains explicit violence or sexual themes, it is likely to receive an M for Mature rating, which means that no one under 17 should play it. There is a rated "A/O" games for "Adults Only" these games have massive violence or nudity. There are no laws that prohibit children from purchasing "M" rated games in the United States. Laws attempting to prohibit minors from purchasing "M" rated games were established in California, Illinois, Michigan, Minnesota, and Louisiana, but all were overturned on the grounds that these laws violated the First Amendment.[82] However, many stores have opted to not sell such games to children anyway. Of course, video game laws vary from country to country. One of the most controversial games of all time, Manhunt 2 by Rockstar Studios, was given an AO rating by the ESRB until Rockstar could make the content more suitable for a mature audience.

Video game manufacturers usually exercise tight control over the games that are made available on their systems, so unusual or special-interest games are more likely to appear as PC games. Free, casual, and browser-based games are usually played on available computers, mobile phones, or PDAs.


Pan European Game Information (PEGI) is a system that was developed to standardize the game ratings in all of Europe (not just European Union, although the majority are EU members), the current members are: all EU members, except Germany and the 10 accession states; Norway; Switzerland. Iceland is expected to join soon, as are the 10 EU accession states. For all PEGI members, they use it as their sole system, with the exception of the UK, where if a game contains certain material,[83] it must be rated by BBFC. The PEGI ratings are legally binding in Vienna and it is a criminal offence to sell a game to someone if it is rated above their age.[84]

Germany: BPjM and USK

Stricter game rating laws mean that Germany does not operate within the PEGI. Instead, they adopt their own system of certification which is required by law. The Unterhaltungssoftware Selbstkontrolle (USK or Voluntary Certification of Entertainment Software) checks every game before release and assigns an age rating to it – either none (white), 6 years of age (yellow), 12 years of age (green), 16 years of age (blue) or 18 years of age (red). It is forbidden for anyone, retailers, friends or parents alike, to allow a child access to a game for which he or she is underage. If a game is considered to be harmful to young people (for example because of extremely violent, pornographic or racist content), it may be referred to the BPjM (Bundesprüfstelle für jugendgefährdende Medien – Federal Verification Office for Child-Endangering Media) who may opt to place it on the Index upon which the game may not be sold openly or advertised in the open media. Such indexed titles are not "banned" and can still be legally obtained by adults, but it is considered a felony to supply these titles to a child.

Commercial aspects

Game sales

A retail display with a large selection of games for platforms popular in the early 2000s

According to the market research firm SuperData, as of May 2015, the global games market was worth USD 74.2 billion. By region, North America accounted for $23.6 billion, Asia for $23.1 billion, Europe for $22.1 billion and South America for $4.5 billion. By market segment, mobile games were worth $22.3 billion, retail games 19.7 billion, free-to-play MMOs 8.7 billion, social games $7.9 billion, PC DLC 7.5 billion, and other categories $3 billion or less each.[85][86]

In the United States, also according to SuperData, the share of video games in the entertainment market grew from 5% in 1985 to 13% in 2015, becoming the third-largest market segment behind broadcast and cable television. The research firm anticipated that Asia would soon overtake North America as the largest video game market due to the strong growth of free-to-play and mobile games.[86]

Sales of different types of games vary widely between countries due to local preferences. Japanese consumers tend to purchase much more console games than computer games, with a strong preference for games catering to local tastes.[citation needed] Another key difference is that, despite the decline of arcades in the West, arcade games remain the largest sector of the Japanese gaming industry.[citation needed] In South Korea, computer games are generally preferred over console games, especially MMORPG games and real-time strategy games. Computer games are also popular in China.[87]


The gamescom fair in Cologne.

Gaming conventions are an important showcase of the industry. The annual gamescom in Cologne in August is the world's leading expo for video games in attendance.[88] The E3 in June in Los Angeles is also of global importance, but is an event for industry insiders only.[89] The Tokyo Game Show in September is the main fair in Asia.

Other notable conventions and trade fairs include Brasil Game Show in October, Paris Games Week in October–November, EB Games Expo (Australia) in October, KRI, ChinaJoy in July and the annual Game Developers Conference.

Some publishers, developers and technology producers also host their own regular conventions, with BlizzCon, QuakeCon, Nvision and the X shows being prominent examples.


Main article: eSports

Short for electronic sports, are video game competitions played most by professional players individually or in teams that gained pupularity from late 2000s, the most common genres are fighting, first-person shooter (FPS), multiplayer online battle arena (MOBA) and real-time strategy.


Gaming consoles at the Computer Games Museum in Berlin

There are many video game museums around the world, including the Computer Games Museum in Berlin[90] and the Museum of Soviet Arcade Machines in Moscow and Saint-Petersburg.[91][92] The Museum of Art and Digital Entertainment in Oakland, California is a dedicated video game museum focusing on playable exhibits of console and computer games.[93] The Video Game Museum of Rome is also dedicated to preserving video games and their history.[94] The International Center for the History of Electronic Games at The Strong in Rochester, New York contains one of the largest collections of electronic games and game-related historical materials in the world, including a 5,000-square-foot (460 m2) exhibit which allows guests to play their way through the history of video games.[95][96][97] The Smithsonian Institution in Washington, D.C. has three video games on permanent display: Pac-Man, Dragon's Lair, and Pong.[98]

The Museum of Modern Art has added a total of 20 video games and one video game console to its permanent Architecture and Design Collection since 2012.[99][100] In 2012, the Smithsonian American Art Museum ran an exhibition on "The Art of Video Games".[101] However, the reviews of the exhibit were mixed, including questioning whether video games belong in an art museum.[102][103]

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External links