Sonic The Hedgehog 2 XL Game

By consuming onion rings, Sonic gains weight and becomes sluggish. To lose weight, run or jump on a [?] monitor!

Sonic RPG Eps 1 part 1

Sonic RPG Eps 1 part 1

This is the very first Sonic RPG episode. Starring: Sonic, Chaos, Dr. Robotnik, Knux, and Shadow.
Sonic Legacy

Sonic Legacy

All the stages in this straightforward yet entertaining Sonic 2 hack have been altered to varied degrees.
Sonic Advance 3

Sonic Advance 3

Dr. Eggman has created the wicked robot G-merl, and Sonic and Tails must intervene to stop him.
Shadow The Hedgehog

Shadow The Hedgehog

In this fan-made sprite swap, you may play Sonic 1 as Shadow. The enemy color schemes have also been modified.
Sonic Triple Trouble MS

Sonic Triple Trouble MS

It is virtually the same game, but a hack of the original Game Gear version to accommodate a wider viewing area.
Sonic 2 Iceknights Crocodiles

Sonic 2 Iceknights Crocodiles

This Sonic 2 hack features a nautical motif. The question of whether there are Crocodiles or Ice Knights genuinely exists is altogether different.