Sonic 1 Megamix Game
In this fantastic Sonic the Hedgehog mix-up rom hack, you can play as Sonic, Mighty, or Shadow (from a menu of options).
Sonic Hidden Stars
How quickly can you find all of the hidden stars within each Sonic picture?
Sonic Boom on segaMD
Sonic 2 has been completely altered, and it now has amazing aerial moves that cost rings to use.
Knuckles Emerald Hunt
Knuckles needs to scour Sonic 2's zones for the Emeralds. Any order can be used to play through the zones.
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.
Kamakazi Hedchog
This is the hardest Sonic game ever made! If you can survive for even one minute you are some kind of god.
Megaman X3
The SNES's last Mega Man X game. Mega Man and Zero must fight the evil Sigma as Maverick Hunters.