Mad Gear Zone

Mad Gear Zone
Fourth level, Sonic the Hedgehog 4
Number of Acts: 4

Mad Gear Zone is the fourth level in Sonic the Hedgehog 4. It seems to be based largely on Sonic 2's Metropolis Zone, and even includes Asteron badniks from that game.

Mad Gear's level select image can be seen at the bottom right in this development image.