Street Fighter II' Special Champion Edition Character portraits were re-drawn The backgrounds of each player's stage were re-colored (a theme throughout most of the revisions). Added the ability to execute reversal attacks (special attacks either when blocking or rising from the ground that would cancel the animation frames and give higher priority) There were various bug fixes for serious glitches (such as Guile's Handcuffs), as well as some balancing of the characters. It is widely credited with launching the fighting genre into the mainstream and extending the life of the worldwide arcade scene for several years with its unique six button "combo" controls and revolutionary loser pays competitive gameplay. Street Fighter II (, Sutorto Fait Ts?) is a 1991 competitive fighting game by Capcom. Champion Edition included several significant updates:[1] All four boss characters (Balrog, Vega, Sagat, and M. Bison) were playable. Players could choose the same character to fight against each other, using palette swapping to differentiate the second player.