Sonic Adventure AutoDemo (Oct 16, 1998 prototype)

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Title Screen
Sonic Adventure AutoDemo (Oct 16, 1998 prototype)
Build date Oct 16, 1998
Build name AutoDemo
Dump status Released
Dumped by Orengefox
Released by Orengefox
Origin GD-ROM disc
Ownership Orengefox (2013-present)
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 non-playable scrolling prerelease of Sonic Adventure 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
  • This prototype contains files from various builds of Sonic Adventure. As a result, any file that contains code from an older version of the game will not work unless modified.
  • The disc contains files for many non-playable levels in a very early state (such as Windy Valley and Casinopolis).