Street Fighter II' Turbo - Hyper Fighting was released in December 1992 in the Japanese arcades. It was known there as the 24th video game made for this system.
Exported as "Street Fighter II' - Hyper Fighting [B-Board 91635B-2]
This ROM upgrade to "Street Fighter II' - Champion Edition
" was an idea by Capcom USA employee James Goddard in response to the rampant unauthorized hacks that arcade operators were installing in their SFII'CE machine to make the game play faster, have mid-air special moves, change characters on-the-fly, and all sorts of other strange things. The hacks made the game interesting again to those who wanted something new in the game, but destroyed the balance of the game.
The 'Hyper Fighting' upgrade was an attempt to incorporate many of the ideas present in the hacks while maintaining game balance. The way those ideas were implemented were taken from "Super Street Fighter II - The New Challengers
", which was still being developed at the time and was planned to be the direct successor to SFII'CE before all the unauthorized hacks forced this upgrade to be made. Ironically, this unforeseen upgrade is considered the best and most balanced game in the SFII series.