A video game is an electronic game in which a player interacts with a virtual environment through input devices such as controllers, keyboards, touchscreens, or motion sensors, and receives audiovisual feedback in real time. The defining feature is that the rules and the state of the game are computed by a programmable device, usually a computer or a dedicated console, rather than fixed mechanically. Video games are a major form of contemporary entertainment and a significant industry, and they have influenced fields from computer-science and artificial-intelligence to education, art, and music. Scholars and industry usually distinguish video games from older electromechanical games and from non-electronic board games, although the boundary between these categories has been debated.
Definition and scope
Definitions of the medium vary. Narrow definitions emphasize games that display graphics on a screen and run on a programmable system. Broader ones include any game whose rules are enforced by software, such as mobile puzzle games, online multiplayer titles, and simulations used for training or research. Games that are primarily designed for purposes other than entertainment, such as flight simulators for pilot training or games used in classrooms, are often grouped under the term serious games, which overlaps with the main category.
Video games are commonly classified by platform (arcade, console, personal computer, handheld, mobile, and virtual reality), by genre (such as action, role-playing, strategy, simulation, and sports), and by business model (such as premium sales, subscription, free-to-play with in-game purchases, and advertising).
History
Early experiments
The earliest electronic games were produced in research settings. In 1952, the British computer scientist A. S. Douglas wrote a version of tic-tac-toe for the EDSAC computer at Cambridge as part of his doctoral work on human–computer interaction. In 1958, the American physicist William Higinbotham created Tennis for Two at Brookhaven National Laboratory for a public visitors' day. The game used an analog computer to simulate a ball bouncing over a net and displayed the court on an oscilloscope. It was never sold commercially and is often treated as the first true video game, although the question of which game deserves the title depends on how the term is defined.
In 1962, Steve Russell and collaborators at the Massachusetts Institute of Technology wrote Spacewar! for the PDP-1 minicomputer. Because the program was shared among universities, it is often cited as the first video game to be played on several computer installations. Its programming community and its ideas influenced later designers, including the founders of the arcade industry.
Arcades and home consoles (1970s)
Commercial video games emerged in the early 1970s. Nolan Bushnell and Ted Dabney founded Atari, and in 1972 Atari released Pong, a table-tennis game that became a commercial success as a coin-operated arcade cabinet. Earlier, in 1972, Magnavox had released the Odyssey, the first home video game console, whose designer Ralph Baer had conceived the idea of playing games on a television in the mid-1960s. Atari's home version of Pong in 1975 sold strongly and helped establish the home market. The Atari 2600, released in 1977, popularized cartridge-based consoles.
Crash, recovery, and consolidation (1980s)
The industry expanded rapidly in the late 1970s and early 1980s, with arcade hits such as Space Invaders and Pac-Man. A glut of low-quality titles and competition from home computers contributed to a sharp contraction in the North American console market in 1983. Japanese companies, most notably Nintendo with the Famicom (released in Japan in 1983) and the Nintendo Entertainment System (released in North America in 1985), led the recovery. Their strict licensing practices and quality controls shaped the business model that persists in later console generations.
Home computers such as the Commodore 64 and later IBM PC-compatible machines supported a separate tradition of software development, in which small teams and hobbyists produced many influential games.
3D graphics, networks, and the PC (1990s–2000s)
Sony's PlayStation (1994) and Nintendo 64 (1996) brought three-dimensional graphics to mainstream consoles. On personal computers, first-person shooters such as Doom (1993) and real-time strategy games popularized multiplayer play over local networks and later the internet. Online services, including Steam (launched in 2003), changed distribution by allowing developers to sell and update games digitally. Massively multiplayer online games, such as EverQuest and World of Warcraft, showed that persistent online worlds could sustain large player communities over many years.
Mobile and digital distribution (2010s–present)
The introduction of smartphones and app stores in the late 2000s created a large audience of casual players. Free-to-play games funded by in-game purchases became a dominant model, especially on mobile platforms. Digital distribution became the main channel for sales on PC and console, and subscription services and cloud-streaming platforms emerged as additional models. Mobile games now account for the largest share of industry revenue, according to industry estimates.
Technology and development
Video games depend on a combination of software and hardware. Core technical components include a game engine, which handles rendering, physics, audio, input, and asset management; a graphics processor; and a storage system for game data. Modern engines such as Unreal and Unity are used across many genres and platforms. Game development involves programmers, designers, artists, writers, sound designers, and testers, and large productions can involve hundreds of people working over several years.
Game design draws on mathematics for physics simulation and procedural generation, on psychology for player motivation and feedback, and on economics for balancing in-game markets. Techniques from artificial-intelligence, including pathfinding and decision systems for non-player characters, have been part of games since the early days, and machine learning is increasingly used for testing, animation, and content generation.
Industry and economics
The video game industry is large by any measure, but published revenue figures differ substantially because analysts use different definitions and scopes. Newzoo, a market research firm, reported that the global games market reached about $201.6 billion in 2025, with growth driven by PC and mobile. GamesIndustry's annual review, which drew on several analytics firms, put the 2025 total at about $197 billion, with mobile accounting for nearly half. Other estimates that include hardware sales or wider market definitions produce figures well above $200 billion, and some reports use much larger numbers. Comparisons between different sources should therefore take their definitions into account.
Industry structure has changed over time. Large publishers and platform holders, such as Sony, Microsoft, and Nintendo, coexist with independent developers, which have grown in influence through digital storefronts and low-cost development tools. Platform owners typically take a share of software sales, and their policies on pricing, exclusivity, and content have significant effects on developers. Mobile platforms are dominated by a small number of app stores, and their fee structures have been the subject of legal disputes in several countries.
Business practices such as microtransactions, loot boxes, and battle passes are a major source of revenue but have attracted criticism and regulatory attention in several jurisdictions. Some governments have restricted or required disclosure of paid random-item mechanics, particularly where minors are involved. The growth of live-service games, which are updated continuously and monetized over long periods, has also changed development practices and the expectations of players.
Players and society
Video games are played by people of all ages, and the stereotype of the young male player no longer describes the majority of the audience. Industry surveys in recent years have reported that a large proportion of players are adults, and that many play on mobile devices. Multiplayer games and online communities have created social spaces, and some games are used as platforms for social interaction, creative expression, and virtual events.
Competitive video gaming, known as esports, has grown into a professional field with organized leagues, tournaments, sponsorship, and broadcast audiences. Market estimates for esports revenue vary, but it is generally regarded as a small share of the total industry compared with mobile and console sales.
Health and well-being
Research on video games and health covers many topics, and results are mixed. The World Health Organization included "gaming disorder" in the International Classification of Diseases (ICD-11) as a condition characterized by impaired control over gaming that causes significant impairment in daily life, while noting that it is rare. Other researchers have studied the benefits of gaming for attention, spatial reasoning, and social connection, and have examined the use of games in rehabilitation and therapy. The relationship between violent video games and aggressive behavior has been studied extensively, and the scientific consensus is that the evidence for a strong causal link is weak, although debate continues.
Education and serious games
Educational games are used in schools and universities to teach mathematics, language, history, and science, and some medical and military programs use simulations for training. Research on learning outcomes depends heavily on game design, and results vary by subject and context. Gamification, the use of game elements in non-game settings, is widely used in education, workplaces, and marketing.
Culture and art
Video games have been analyzed as a form of narrative and art. Some scholars study them through the methods of literature and film, focusing on story and character, while others emphasize the distinctive role of interactivity and rules. Games have also been discussed as representations of social issues, and debates over representation, including gender, race, disability, and sexuality, have been central to public discussion of the medium. Video game music, which developed under severe hardware limits and later grew into full orchestral scores, is an established area of study and performance.
The medium has also produced a large community of creators, critics, and fans, along with journalism, streaming culture, and fan-made modifications. Modding has been an important source of new games and has sometimes led to commercially successful titles.
Legal and ethical issues
Several legal questions surround video games. Intellectual property law governs copyright in code, art, and music, as well as trademarks for game franchises and the protection of game mechanics, which is generally limited. Disputes over emulation, reverse engineering, and the preservation of older software have been prominent in court cases. Labor issues, including long working hours during development periods ("crunch"), job insecurity, and unionization efforts, have drawn attention from workers and regulators. Data collection in games raises privacy questions, particularly where children play and where data is used for targeted advertising, and online games face challenges related to harassment, cheating, and security breaches.
Preservation
Many early games exist only in fragments or are inaccessible on modern hardware. Museums, archives, and independent researchers work to preserve physical hardware, software, and documentation. Online storefronts can remove titles, and server shutdowns can make multiplayer games unplayable, which has led to proposals for legal exemptions and archival programs. Emulation projects that recreate older systems in software are an important preservation method but have legal complications in many countries.
References
- The Complete History of Video Games 1952 - 2026blog.udonis.co
- Pong (electronic game)ebsco.com
- Video Game History - Timeline & Factshistory.com
- The First Video Gamehistoryng.com
- Global games revenue breached $200B in 2025gamesbeat.com
- The Gaming Industry in 2025 by the Numbers — An Overview from GamesIndustrygameworldobserver.com
- The First Video Game in the World (No, It's Not Pong)comicbook.com
- Video Game Statistics 2026: Player Count And Industry Insightsfosspost.org