Sonic X-treme

Unreleased Sonic X-treme was intended to be the first 3D Sonic adventure, developed from concepts stretching back to the 32X era, but ran into a myriad of development problems. The game's cancellation (and replacement by a port of Sonic 3D Blast that was in fairness superior to the Genesis original) is widely considered a large reason for the Saturn's commercial failure.

A disc containing an early tech demo was discovered in 2005 and released to the public on July 17, 2007.

Unused Graphics


These textures can be seen below the playfield, and were used in the Metal Sonic boss fight.