Sonic the Hedgehog Megamix (commonly shortened to Sonic Megamix) is a work-in-progress multiperson disassembly modification of the original Sonic the Hedgehog videogame for the Sega Mega Drive/Genesis, developed 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.

The authors complete the game in record time using glitches such as "zips" to gain super fast speeds.

We also have movies in Sonic the Hedgehog, Sonic the Hedgehog 2, Sonic the Hedgehog CD and Sonic 3 & Knuckles.