This is for Knuckles in Sonic 3 and works on Sonic Classic Collection. Start a new game and play through the entire game. After you have beaten the game, you are able to to pick any level on that save ...
Beats the hell out of the GBA port of Sonic 1. Example, this one is playable. They should have used oldskool early 90s Sonic on the cover, it would have sold more that way.
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