Sonic Heroes (GameCube Prototype 10.8)

GameCube prototype 10.8 Is the earliest known full prototype of Sonic Heroes, released by drx during the February 23, 2008 proto release. It was likely made before the levels were completed, there's also some other interesting stuff present.

Music
There's numerous music tracks that are different in this build, though the original versions of Seaside Hill, Sea Gate and Rail Canyon from the Xbox E3 Version have been replaced with their final counterparts.