Sonic Boom on segaMD Game
Sonic 2 has been completely altered, and it now has amazing aerial moves that cost rings to use.
Sonic 2 Battle Race
A two-player rom hack that requires players to sprint to the bottom of each screen in order to earn points. Most points win.
Sonic Sunventure
Five original levels and new music are featured in this succinct yet delightful Sonic 1 hack. Contains a few surprises as well as some new monitors.
Sonic Sky Chase
Glide through 4 exciting levels as you weave your way through the blue skies
Sonic Lost In Mario World
Sonic enters a crazy blue portal of some sort and ends up lost in Mario World!
Sonic Advance
This Sonic game for the GBA pits Sonic against Dr. Eggman as the latter tries to turn all of the world's animals into robots. It was the first Sonic game ever officially released on a Nintendo system.
Sonic 3 And Sally Acorn
Sally Acorn can be controlled in this sega rom hack in place of Sonic. She is slower than Sonic and unable to perform spin attacks, although she can slide, shoot lasers, and use scan mode to reprogramme Eggman traps and other machinery.