Commodore International Corporation[a] was a home computer and electronics manufacturer with its head office in The Bahamas and its executive office in the United States founded in 1976 by Jack Tramiel and Irving Gould. It was the successor company to Commodore Business Machines (Canada) Ltd., established in 1958 by Tramiel and Manfred Kapp. Commodore International (CI), along with its U.S. subsidiary Commodore Business Machines, Inc. (CBM), was a significant participant in the development of the home computer industry, and at one point in the 1980s was the world's largest in the industry.

Sega Corporation[a][b] is a Japanese video game company and subsidiary of Sega Sammy Holdings headquartered in Tokyo. It produces several multi-million-selling game franchises for arcades and consoles, including Sonic the Hedgehog, Angry Birds, Phantasy Star, Puyo Puyo, Super Monkey Ball, Total War, Virtua Fighter, Megami Tensei, Sakura Wars, Persona, The House of the Dead and Yakuza. From 1983 until 2001, Sega also developed its own consoles.

Atari (/əˈtɑːri/) is a brand name that has been owned by several entities since its inception in 1972. It is currently owned by French holding company Atari SA (formerly Infogrames)[b] and its focus is on "video games, consumer hardware, licensing and blockchain".[5] The original Atari, Inc., founded in Sunnyvale, California, United States in 1972 by Nolan Bushnell and Ted Dabney, was a pioneer in arcade games, home video game consoles, and home computers. The company's products, such as Pong and the Atari 2600, helped define the electronic entertainment industry from the 1970s to the mid-1980s.

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