Store moves: When selecting a version to play as, hold Start and select "Super Turbo". Release Start, then select Chun-Li, E.Honda, or Vega as your fighter. They now have the ability to store special moves and super combos. For example, execute Chun-Li's Senretsukyaku without pressing the final Kick to end it. The next time you press Kick, the move will be executed.
Play as Akuma(aka Goukie in JAPAN): Select Super T player type, then highlight the following characters in order, waiting one second between each selection: Ryu, T. Hawk, Guile, Cammy, Ryu. Then, press Start and within one second press all three Punch buttons simultaneously.
Alternately, highlight Ryu for at least a second. Then, go to T. Hawk, and highlight him for at least a second. Go to Guile and highlight him for at least a second. Then, go to Cammy and highlight her for at least a second. Now, go to Ryu once again and highlight him for at least one second. Press Start then quickly press PPP (default is L2). Ryu's profile will become a silhouette of Akuma's profile. NOTE: when pressing the punch buttons just know you only have just 1 mili second to press the buttons.
Speed up background: When you are at the "Vs". Or "Winner" screen before or after a fight, hold X and the background will speed up. Original colors: Highlight a fighter at the character selection screen in Normal, Super, or Old Super mode, then press Start. That character will appear in their original Super Street Fighter 2 Turbo color if the other player also selects that same character in Super mode.
Akuma's (Gouki's) moves: Go Hadoken: Press Down, Down/Forward, Forward + any Punch. Tatsumaki Senpukyaku: Press Down, Down/Away, Away + any Kick. Go Shoryuken: Press Forward, Down, Down/Forward + any Punch. Shakunetsu Hadoken: Press Away, Down/Away, Down, Down/Forward, Forward + any Punch. Zanku Hadoken: While in air, press Down, Down/Forward, Forward + any Punch. Additional difficulty settings: Successfully complete the game on the normal difficulty setting to unlock the easy and hard difficulty settings.
Fight Akuma: To fight against Akuma in the final round (rather than Bison) complete the game without losing a single round and get four "perfects." NOTE: when you get to bison he will come and kick bisons butt and will fight you.