Short answers, pulled from the story.
Street Fighter II Turbo: Hyper Fighting is a 1992 arcade fighting game developed and published by Capcom. It is the third arcade version of Street Fighter II, following Street Fighter II: Champion Edition, and introduced a faster playing speed and new special moves for most characters. Capcom distributed it as an upgrade kit designed for installation into Champion Edition printed circuit boards.
Street Fighter II Turbo was released for the Super Famicom on the 11th of July, 1993 in Japan. North American players received the Super Nintendo Entertainment System version in August 1993, and the PAL region followed in October 1993.
The SNES version of Street Fighter II Turbo sold 4.1 million copies worldwide. That total made it the ninth best-selling game for the Super Nintendo Entertainment System.
Street Fighter II Turbo added at least one new special move to every character except Guile and the four Grand Masters. New techniques included the airborne Hurricane Kick for Ryu and Ken, the Kikoken projectile and aerial Spinning Bird Kick for Chun-Li, the Yoga Teleport for Dhalsim, the Super Body Slam for E. Honda, a vertical rolling attack for Blanka, and the Turbo Clothesline for Zangief.
In 1997, Electronic Gaming Monthly named Street Fighter II Turbo the best arcade game of all time and ranked the Super NES version fifth among the best console games ever. The magazine described it as the last and best refinement of Street Fighter II before the Super and Alpha installments changed the series.
Street Fighter II Turbo became the highest-grossing arcade game of 1993 in Japan. In January 1993, Game Machine listed it as the second most successful table arcade cabinet on the market, outperforming titles including Capcom's own Warriors of Fate and Street Fighter II Dash.