The term 'Arcade Giant' refers to two of the most influential companies in the history of video gaming: SEGA and Atari. SEGA is a Japanese multinational video game developer and publisher, founded in 1960. Atari is an American video game and home computer company, founded in 1972. Both companies have had a major impact on the development of the video game industry, and are considered to be two of the most important arcade giants in the history of gaming.