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Proto:Street Fighter II: The World Warrior (SNES)

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This page details one or more prototype versions of Street Fighter II: The World Warrior (SNES).

Included in the July 2020 Nintendo leak is what appears to be a late prototype of Street Fighter II - The World Warrior. This build is located within the Link to the Past source at SFC\ソースデータ\ゼルダの伝説神々のトライフォース\ドイツ_PAL\Ger_asm. There are four .hex files named st20, st21, st22 and st23 which need to be combined together. This can be done using a hex editor.

General Differences

To do:
  • Check for more differences such as in text and graphics.
  • Is the Graphic Viewer present?

Title Screen

  • Attract mode demo fights appear to start slightly earlier, and plays out slightly differently. For example, Ryu vs. Zangief's fight is a bit more evenly played out, in terms of damage dealt.
Proto Final
Street Fighter II (Japan) (st2X.hex Proto) title.png Street Fighter II (Japan) title.png
  • No dots in the text saying "V.S. BATTLE".

Proto Final
Street Fighter II (Japan) (st2X.hex Proto) VS Screen.png Street Fighter II (Japan) VS screen.png
  • Some values are highlighted in the V.S. mode's player select screen. The player with most wins does not have blue colored text.


In the Sound Test, there appears to be a unique, unused song at ID 30 (retail only goes up to 2F). This song sounds out of place, and doesn't seem to fit in with the others.

To do:
Is this song from a different game? If so, which one?
Proto Final
Street Fighter II (Japan) (st2X.hex Proto) Option Mode.png Street Fighter II (Japan) Option Mode.png
  • Values for the selected song and sound effect are not yellow.


Proto Final
Street Fighter II (Japan) (st2X.hex Proto) gameover.png Street Fighter II (Japan) gameover.png


Upon beating the game, the "THANKS FOR PLAYING!!" message appears, but immediately after the music ends, the screen fades out and returns to the title screen. Normally, the game waits for player input, then shows the high scores before returning to the title screen. In addition, beating the game on the highest difficulty does not play the special credits sequence.