Sonic The Blue Blur
Every level has been revamped to provide a different playing experience. Minor changes to the palette are also made.
Sonic Fly
It's Angry Birds but Sonic style. Use 4 different Sonic types to reach the target score on each level. 30 total levels.
Sonic Blox
Sonic Blox is Sonic Tetris but with some help from Sonic Characters like Knuckles!
Megaman X2
A team of Maverick Hunters is luring X while Zero is dead (or is he?). In this one, you will fight 8 additional robot masters.
Final Fantasy Sonic X3
Sonic finds himself pondering the Stone of Chaos - what is the deal with this Stone anyways??!
Sonic Tails Double Trouble
This fantastic Sonic 1 rom hack lets you play as Sonic or Tails and features entirely new levels and music! average level of difficulty