Sonic X-treme

date : 18-unreleased
licensing : licensed
state : cancelled
by : Sega Technical Institute(developer), Sega (publisher)
A proposed Sonic the Hedgehog game by Sega Technical Institute while Sonic Team was busy developing Nights Into Dreams for the Sega Saturn. The game featured a troubled development history, with multiple platform changes, as Sega struggled to figure out which direction to take the franchise after Sonic & Knuckles (1994). The earliest planning began as another side-scrolling platformer on the Sega Genesis, but as ideas moved into making the game a 3D platformer, and the team quickly transitioned to the more powerful 32X hardware, where it was temporarily known as Sonic Mars, and then transitioned again to the Sega Saturn, which was worked on until its ultimate cancellation in late 1996.[261]