Updated Versions

Updated versions
Street Fighter II′: Champion Edition
Street Fighter II′: Champion Edition (pronounced Street Fighter II Dash in Japan, hence the prime symbol)
* All four boss characters became playable.
* Players could choose the same character to fight against each other, using palette swapping to differentiate the second player.
* The backgrounds of each player's stage were re-colored (a theme throughout most of the revisions).
* There were various bug fixes for serious glitches (such as Guile's Handcuffs), as well as some balancing of the characters.
Street Fighter II′: Hyper Fighting
Street Fighter II′ : Hyper Fighting (Street Fighter II Dash Turbo in Japan) was released in response to an explosion of modified bootlegs of the Champion Edition Changes included:
* Faster gameplay.
* Many characters gained new moves, and several that could now be performed in mid-air.
* All characters were given new, default color palettes.
Super Street Fighter II: The New Challengers
Super Street Fighter II: The New Challengers was the first Street Fighter game that Capcom would release on its CPS-2 hardware. The arcade version of this game also included a variant that allowed four arcade cabinets to be connected together for simultaneous tournament play. This version contained the most extensive changes introduced in the series:
* Four new characters were added (Fei Long, T. Hawk, Cammy, and Dee Jay).
* Boss characters received updated regular move sets.
* Boss characters received new, individual game endings.
* Each character could be selected with one of eight different color palettes.
* Some of the original eight playable characters received updated art and audio.
* The speed introduced in Hyper Fighting was reduced.
* A combo counter (a first despite combos being in the game since the original), as well as point bonuses for first attack, combos and reversals.