Super Street Fighter II Turbo is a fighting game released for the arcades by Capcom in Japan on February 23, 1994, in North America on February 23 and March 26, 1994 (beta) and in Europe in March 1994 (beta). It is the fifth installment in the Street Fighter II sub-series of Street Fighter games, following Super Street Fighter II: The New Challengers. Like its predecessor, it ran on the CP System II hardware. Super Turbo introduced several new gameplay mechanics not present in previous versions of Street Fighter II, including the addition of combination moves called super combos and air combos. It also introduced the secret character Akuma, who would go on to become a recurring character in later Street Fighter installments and other Capcom fighting games. Super Turbo was originally ported to the 3DO Interactive Multiplayer, followed by the PlayStation and Sega Saturn (under the title of Super Street Fighter II Turbo: The Ultimate Championship) as part of the Street Fighter Collection, and for the Dreamcast in Japan under the title of Super Street Fighter II X for Matching Service. A remake of the game was released for the PlayStation 3 and Xbox 360 titled Super Street Fighter II Turbo HD Remix. While not as much of a commercial success as previous iterations of the game, the game was well received by critics and had a huge impact on the competitive fighting game "e-sport" circuit. Super Street Fighter II Turbo is still played competitively almost 30 years after its original release, and is the oldest fighting game that still has an active competitive tournament scene throughout the world. Characters Super Street Fighter II Turbo allows players to play as versions of characters from the original Super Street Fighter II in addition to their regular counterparts in the game by inputting a code for each character. The character would play as they would in Super Street Fighter II, with subtle differences. For example, the alternate version of Sagat in Super Turbo can now cancel his light kick into any special move, whereas in Super Street Fighter II he couldn't. Super Street Fighter II Turbo also saw the introduction of the series' first secret character, Akuma (Gouki in Japan). Akuma is playable only as a secret character. He can be used by inputting a code at the player select screen. Even in this weakened form, he is the most powerful character