Sonic Scorched Quest Game
Sonic Burned Edition's trial version. The same plot and level design are present, but the flaming motif is absent.
Sonic 2 Hybridization Project
This hack combines Sonic 2 (16 bit) and Sonic 2 (8 bit), and it has updated graphics and emulates the 8 bit levels.
Metroid
In this retro NES game with a space theme, defeat Kraid and Ridley and then get to Mother Brain.
South Island Adventure
Espio the Chameleon and a ton of brand-new levels can be found in a Sonic hack.
Sonic and The Mystic Gems
With new music and opponents, this fantastic hack emphasizes exploration and lets you climb, swim, fly, and glide your way through it.
Sonic 30 Day Challenge
A double-jumping Sonic hack that is really well done. Only until you acquire an Emerald monitor are wall breaches feasible.
Sonic RPG Eps 9
This is the one we have all been waiting for - take the exciting next step into the Sonic RPG saga