Sonic Megamix is a ROM hack that goes above and beyond, taking Sonic 1, putting it on the SEGA CD, and giving it tons of new content and mechanics. You can play as Sonic, Tails, Knuckles ...

itself a CD-ROM-reading accessory for the Sega Genesis. Amy was notable for one major reason; she was the first female character in the Sonic games. Unfortunately, her portrayal was, shall we say, ...