Sonic 3 debug
Do the sound test cheat (up, up, down, down, up, up, up, up when sonic is appering) the sound test is actually a level select, select the level you want.
Press and hold Square and Start untill the level starts.
Press X to change to the debug mode. (Note: While playing as sonic change the debug mode to a TV box and break it.
(You will instantly become Super Sonic).
If you need more help, we've got more Sonic Mega Collection Plus cheats and also check out all of the answers for this game
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