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

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

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

Sonic Sky Chase

Glide through 4 exciting levels as you weave your way through the blue skies
Sonic Lost In Mario World

Sonic Lost In Mario World

Sonic enters a crazy blue portal of some sort and ends up lost in Mario World!
Sonic Advance

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

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.