Sonic and Knuckles Sonic 3 Game

The video game Sega designers always imagined when Sonic 3 was first published is Sonic and Knuckles alongside Sonic 3. This game is jam-packed with 14 zones, 3 playable characters, the Super Emerald missions, and even Sonic, Tails, and Knuckles' Hyper/Super transformations.

Sonic Delta

Sonic Delta

Play as Knuckles, Tails, or Sonic. includes a mash-up of lost levels, fan-made levels, and levels from Sonic 1.
Sonic RPG Eps 4 part 2

Sonic RPG Eps 4 part 2

Part 2 of the 4th Episode of the Sonic RPG. Sonic is off to find a cure for the cursed Knuckles & Shadow is back.
Dark Sound the Hedgehog

Dark Sound the Hedgehog

New stage music, graphics, level designs, and mid-air spin dashes all around! Moreover, you are free to begin at any level.
Sonic The Lost Land

Sonic The Lost Land

As Sonic explores an uncharted new area, he must dash through seven levels of enemies and traps. The music for this hack is dynamically chosen based on the act you are playing, and the bonus stage consists of the six Chaos Emeralds.
South Island Adventure

South Island Adventure

Espio the Chameleon and a ton of brand-new levels can be found in a Sonic hack.
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.