Stuff We Play put together a great hour-long documentary on Sonic X-Treme and how it caused a lot of pain and suffering for all involved at SEGA.
The story here covers the rise and fall of Sega in the ’90s, the conception and cancellation of Sonic X-Treme, how it almost became a Sega 32X game, and how it nearly killed several members of its development team in the process.