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 10.13 is having issues with dumping so it doesn't have a article currently.
| E3 2003 prototype|
Dated May 9, 2003, a demo made available from E3 2003.
| GameCube prototype 10.8|
Dated October 8, 2003, this is the earliest known full prototype.
| Mario Kart: Double Dash!! Bonus Disc|
A pre-order reward with multiple demos.
| GameCube Prototype 11.18|
Dated October 10, 2003, another pre-order reward with multiple demos.
GameCube Prototype 10.13
This build is currently having issues with dumping, though what's known currently is the build has the final's title screen.