You can get to the level select screen in Sonic 3 using a similar process. 1. Open Sonic 2 and enter the level select cheat 2. Freeze the game by wiggling the

You can get to the level select screen in Sonic 3 using a similar process. 1. Open Sonic 2 and enter the level select cheat 2. Freeze the game by wiggling the cartridge 3. Replace the cartridge with Sonic 3, and hit the reset button This blew my mind as a kid.