Sonic the Hedgehog 3 Cheats

Level Select

This code requires a Sonic 2 cartridge. Insert Sonic 2 and enter the Sonic 2 Level Select (play sounds 19, 65, 09, and 17). Return to the title screen, hold A and press Start. To transfer this to Sonic 3, hold A and carefully remove the cartridge without turning off the Genesis. Insert Sonic 3 and press Reset. Finally, release A and press Down twice at the main menu. REMEMBER: You might notice a few levels you haven't seen before, but you can't select them. Those levels were originally intended for the game, but were pulled in order to release the game on time.