Sonic X-treme is an unreleased platform game in the Sonic the Hedgehog series. It was originally developed by Sega for the Mega Drive/Genesis but was moved to the Sega 32X and eventually to the Sega Saturn and intended to be released around Christmas of 1996, but after many problems and a long hiatus of development hell, it was finally cancelled in 1997. Had it been finished, it would have been the first fully 3D Sonic game and th ...