From WikiTemp, the GBAtemp wiki

List of Sega Genesis games tested on the WiiMednafen emulator.

Compatibility List

Legend
Very Playable - Full Speed. Very Good Audio. No gfx glitches.
Playable - Full Speed. Good Audio with a little Noise/stuttering. Few gfx glitches.
Playable - Minor Performance issues. Bad audio. Non intrusive gfx glitches in game. Some games might freeze far into the game.
Working/Unplayable - Game is very slow/buggy/laggy/glithced up.
Freezing - Game boots but freezes somewhere.
No boot - Game doesn't even boot.
ROM Title Version Notes
Muhammad Ali Heavyweight Boxing (E) 0.3 Error Message: This will only run on an Sega PAL Megadrive. Unplayable.
Muhammad Ali Heavyweight Boxing (E) 0.3 Error Message: This will only run on an Sega PAL Megadrive. Unplayable.
Sonic the Hedgehog (W) 0.3 Very Playable.