This version of Street Fighter II is similar in most aspects to the original, save that all 12 characters are selectable from the get-go (the boss characters were originally locked), and the game engine has been revamped.
According to publisher Capcom, Street Fighter II: Champion Edition has sold 1.65 million copies worldwide since its initial release (as of June 30, 2016).
Sega Master System version
This was one of the largest Master System games ever created. It was only available in Brazil, where the older consoles were still very popular at the time. As this was an 8-bit title, some cuts had to be made. There are only eight playable characters (Ryu, Ken, Chun-Li, Blanka, Guile, Sagat, Balrog and Mr Bison) and the background is devoid of animation. Some moves were omitted as well, such as Ken and Ryu's signature Dragon Punch. Also, since the original Master System controller only had two buttons, Tec Toy manufactured a six-button controller to go with the game. This controller later became the standard controller for Master System in Brazil.
Street Fighter II' is pronounced as Street Fighter Two Dash.
This version for Genesis has re-worked sounds and voices if you compare it to the SNES version, with less colors, but it was a lot faster on turbo mode.