Street Fighter II: The World Warrior is a 2D fighting game developed by Capcom and originally released for arcades in 1991. It is the second installment in the Street Fighter series and the sequel to 1987's Street Fighter. It is Capcom's fourteenth game to use the CP System arcade system board. Street Fighter II vastly improved many of the concepts introduced in the first game, including the use of special command-based moves, a combo system, a six-button configuration, and a wider selection of playable characters, each with a unique fighting style.

Street Fighter is a 1987 arcade video game by Japanese developer and publisher Capcom. It is the first competitive fighting game produced by the company and the first installment in the Street Fighter series. It was a commercial success in arcades and introduced special attacks and some of the conventions made standard in later fighting games, such as the six-button controls and the use of command-based special moves.