Street Fighter II: The World Warrior (1991) is the legendary fighting game that defined the genre, running on Capcom’s modular CP System 1 (CPS-1) arcade hardware. It revolutionized arcades by shifting the focus from high scores to competitive head-to-head multiplayer, introducing the iconic “World Warrior” roster and the first unintentional “combo” mechanics. 

Revolutionary Gameplay Mechanics

• Six-Button Layout: Unlike contemporary two-button games, it used three punches and three kicks of varying strength and speed (Light, Medium, Heavy).
• Combo System: Originally a programming quirk that allowed players to “cancel” move animations into others, this accidental feature became a foundational pillar of all future fighting games.
• Special Moves: Introduced universal inputs like the “quarter-circle forward” for Ryu’s Hadouken, which became a standard language for gamers worldwide.
• Diverse Roster: Featured 8 unique playable characters from different countries, each with distinct fighting styles and special moves, plus 4 unplayable boss characters (the “Grand Masters”).