Features

-The Game Speed defaults to 3 stars, like in console versions of Street Fighter II' Turbo: Hyper Fighting, and Super Street Fighter II Turbo. 

-Some character sprites that were missing are inserted, such as stance sprites for Shotos, Sagat and Cammy.

-Air Specials
-Charge Times are disabled (except for Turn Around Punches, which charge way faster).
-Characters can be juggled. Once a juggle quota is reached, they fall down faster.
-Characters can back dash. Emily and Madonna can also forward dash. Emily can air dash.
-Wakeup can be delayed like in Ultra Street Fighter IV, by holding at least 2 Kick buttons.
-A few moves' commands are changed to be easier to use, such as Sagat's Tiger Knee and Cammy's Spinning Back Fist.
-Character Endings can be accessed on any difficulty.
-A lot of PCM samples, such as Guile's Sonic Boom voice clip are changed.
-Most of the music have different pitches, tempos and use different YM2612 instruments.
-All Arcade Ladder Arrangements are changed.
-A few aspects were made more Arcade accurate, such as Dictator's suplex reaction.
-Health persists between Elimination matches in Group Battle Mode.
-In Arcade Mode, stages can be chosen by the players in 2-player matches with the Mode button.
-The computer can control a player in Group Battle Mode by holding the Mode button.
-The Debug Menu can be accessed by holding A or Mode, and selecting Options.

-In Versus Mode, directions can be locked by holding the Mode button, any direction then releasing the Mode button. Lifebars can be refilled with both Players' Mode buttons.

-Challenge Modes can be played in faster speeds.

-New moves, such as Zangief's Coconut Thunder and Sagat's Tiger Dive.
-Extra colors can be chosen by holding the Mode button in Arcade, Versus and Challenge Modes. If the Mode button is held when starting Group or Tournament Modes, the extra pack of colors are used.

-In Arcade Mode, the player can switch to either the previous character defeated (Down+A+B+C), or to the character that they're up against (Up+A+B+C), a la Vampire Savior 1 and 2. This allows for "relay" playthroughs, or playthroughs that use multiple characters where a player can switch to a character that they recently defeated.

Exceptions for Shotos and Roll are permitted in Shadow Mode playthroughs.