The Collision Chaos Zone is a pocket zone adjacent to Mobius Prime. It was created by Dr. Robotnik and used as the setting trap for Sonic the Hedgehog, using Amy Rose as bait. Part of the trap involved destroying part of the race track behind Sonic as he ran through it, preventing from retreating. Sonic confronted and defeated Metal Sonic in this Zone before rescuing Amy and returning home to Knothole. (StH: #25)