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This page details one or more prototype versions of Sonic Heroes.
Two of these prototypes of Sonic Heroes came from drx's big 2008 proto release: one is a demo that came with a Mario game, and another is the demo from E3 which can be found on the BetaArchive FTP.
GameCube prototype 11.18 is virtually the same as the final version, and thus doesn't have an article.
| GameCube prototype 10.8|
Earliest known full prototype.
| E3 2003 prototype|
A demo made available from E3 2003.
| Mario Kart: Double Dash!! Bonus Disc|
A pre-order reward with multiple demos.