Sonic Adventure Tournament Disk (Aug 10, 1999 prototype)

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Title Screen
Sonic Adventure Tournament Disk (Aug 10, 1999 prototype)
Build date Aug 10, 1999
Build name Tournament Disk
Dump status Released, redump needed
Dumped by Laurent
Released by Laurent
File release date April 4, 2023
Origin GD-R disc (HKT-06)
Dump method Dreamcast SD Rip
Game Sonic Adventure
System Dreamcast
Genre Platform
Final build JP Dec 10, 1998
US Aug 12, 1999
EU Sep 9, 1999
Release date JP Dec 23, 1998
US Sep 9, 1999
EU Oct 14, 1999
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A prototype of the Sonic Adventure Tournament Disc for the Sega Dreamcast.

To do
This article is missing gameplay screenshots. You can help by editing the article and adding them.


The Cutting Room Floor research
  • Used on the Sega Dreamcast Mobile Assault Tour.
  • Almost identical to the released Sonic Adventure, except for a few minor differences.
    • Different track used on the title screen.
    • Post title screen demos don't exist.
    • ADX files have not been down sampled to 32khz yet.
    • Some ADX files are missing that were present in both Japanese and US releases.
    • Game boots right to Emerald Coast as Sonic with all of his unlockable abilities.
    • You have 2 minutes to clear Emerald Coast, with a small timer appearing before time runs out.
    • When time runs out or when you clear the stage, the score board stays in place before you press START.
    • Some German/French localization files are a little different.
    • The disc contains the same extras as the Japanese final disc.
    • TGS_SOUSA_x.PRS files are present which were removed from the US final.



Huge thanks to Laurent and the anonymous donator for dumping and sharing this prototype!

See also