Sonic X-treme was a cancelled platform video game in the Sonic the Hedgehog series. Early versions were considered for several systems until ending up as being developed by Sega for the Sega Saturn, with the intended release being around Christmas of 1996. However, after getting stuck in development hell and missing that deadline, the game was eventually cancelled. Had it been finished, it would have been the first fully 3D Sonic game and the first original Sonic title developed for the Sega Saturn.