Post by playgeneration on Nov 6, 2011 21:31:20 GMT
There are loads of hacks of Teddy Boy and Psycho Fox, with the main sprite and title screens changed. Dodgy looking Sonic, Zelda and other sprites replacing the usual ones, so that's worth looking into.
Check out the Sonic retro website, as there's been a couple of SMS Sonic 2 hacks. One with the Neo Geo Pocket Sonic game sprites put in, and there's another project attempting to recreate the Mega Drive version of Sonic 2.