The Scrap Brain Zone was one of Dr. Eggman's bases of operation in the version of the Prime Zone altered by the first Genesis Wave. It had the layout of an industrial city, and Dr. Eggman equipped it with many types of booby-traps (flamethrowers, lasers, trapdoors, etc).
Dr. Eggman occupied this area during the period when his Operation: Clean Sweep altered reality and reshaped Mobius. Its appearance as a highly industrialized area seemed to have struck some chords in the memories of Sonic the Hedgehog and Boomer, who suggested that the area should have been named Robotropolis or New Megaopolis. The Scrap Brain Zone eventually lead to the Final Zone. (StH: #227)
- The Scrap Brain Zone appeared in the first Sonic the Hedgehog game and was the second to last zone of the game.