Donnie The Chao also formerly known as Donnie The Hedgehog is a fan hack for everything @SSF1991 related. This hack may or may not scare the kids at Halloween parties.This hack may or may not be controversial.This hack may or may not have memes.Credits:CaveQuest- Level Layout, Special Stages, Art and Music.LuigiXHero- MusicLordXernom- MusicQuirby64- Art.SSF1991- Voice and Playtester. (Except for this version) DevEd- Art and Level Layout.Baraksha- Art(Signpost).Sonic Retro and SSRG tutorials for some stuff.Special Thanks to FireRat and The rest of Team Overload for support and help.

A Sonic 2 hack made by MainMemoryThis hack adds the Drop Dash from Sonic Mania into Sonic 2 for the Sega Mega Drive. While playing as Sonic, you can perform a Drop Dash by jumping, then pressing and holding a jump button until you touch the ground.

Eggman the Dictator in Sonic the Hedgehog (aka Eggman in Sonic 1) is a rather interesting hack of Sonic the Hedgehog made by L0st - Sonic is replaced byEggman, who runs through the stages. Due to Eggman's larger sprites, the mappings and collision engine were rewritten from scratch, and Eggman also jumps at the same height and runs at the same speed, above and below water. As a result, Eggman cannot collect rings, open item boxes, destroy enemies, be hurt by objects or drown—the only way to kill Eggman is by landing on spikes, getting crushed, or falling off the screen (all three of which require a reset). Because of this, the hack is little more than a novelty, but is an impressive one nonetheless. Eggman can't use debug mode either, but Level Select still works. Also the Special Stages are unchanged, as Eggman can't enter Special Stages from the main game.

The Homing attack/jumpdash in Sonic 2 proof of concept hack is a hack which adds the homing attack to Sonic's arsenal of moves in Sonic the Hedgehog 2. The Homing attack is a move which is performed in mid-air to zoom into Badniks and objects with a high speed attack. In addition, trailing images appear when the player reaches top speed. It was created primarily by Hitaxas but with assistance by shobiz.

Kirby in Sonic the Hedgehog is a hack of Sonic the Hedgehog by Darkon360. It features Kirby whom replaces Sonic as the lead protagonist. Kirby can inhale most enemies but cannot copy their abilities.