- For the level in Sonic the Hedgehog CD, see Collision Chaos. For the version of this Zone after the Super Genesis Wave, see Collision Chaos (Archie).
Collision Chaos Zone was created by Dr. Robotnik and used as a trap for Sonic the Hedgehog, in which Amy Rose served as bait. Part of said trap involved destroying part of the race track behind Sonic as he ran through it, preventing him from retreating. Sonic confronted and defeated Metal Sonic v1.0 in this Zone before rescuing Amy and returning home to Knothole.
- Collision Chaos Zone is based on the round that appeared in Sonic the Hedgehog CD. Unlike in the comic continuity however, the game version of the Zone is a pre-existing zone on Little Planet.