Super Street Fighter II: The New Challengers (SNES)

Unused Button Code
Unlike the CPS2 version, the SNES version of Super Street Fighter II retains the turbo setting from Street Fighter II Turbo, accessible by pressing Left or Right at the title screen. However, there is evidence that this feature originally required a button code to unlock, and the relevant programming is still in the game.

The Pro Action Replay code (US) initially disables the turbo setting. Now, at the title screen, press Right, hold Down then Down + Right, and then press L. If done correctly, Ryu's "shoryuken" voice will play and the turbo option will become available once again (this time defaulting to three stars instead of zero).

Music Differences
The US version contains several instrument samples which differ from the ones used in the Japanese and European versions, causing noticeable differences between both soundtracks.

Build Dates
A string containing the build date and a bit of other randomness is used as filler throughout the ROM.