Sonic the Hedgehog Megamix (commonly shortened to Sonic Megamix) is a multiperson disassembly modification of the original Sonic the Hedgehog videogame for the Sega Mega Drive / Genesis, headed up by Team Megamix and more recently moved to the Sega Mega CD. The game features the ability to play as one of five different characters: Sonic the Hedgehog, Mighty the Armadillo, Shadow the Hedgehog, Miles “Tails” Prower, and Knuckles the Echidna. It is an extensive reworking of the original game, featuring new art, music, abilities, layouts, and other things.