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.

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.

Not-so-Super Sonic 2 is a hack of Sonic the Hedgehog 2 by MainMemory. It was first posted in the Random Hack/Mini Project thread, where nobody paid any attention to it. MainMemory said himself that updates would be unlikely, but has changed his mind.

A hack based on Sonic the hedgehog 2 made by snkenjoi Aperture Science's Portal Gun finds its way into Sonic 2.The portals in the game actually affect objects other than sonic - to the extent that you can kill an enemy with its own projectile if you fling it back at it.Credits:E-122-Psi - sonic's spritesheetflamewing - help with collision detectioniojnekns - portal spritesFraGag - testing

Sonic 2 Adventure Control is a hack of Sonic 2 by MainMemory. It changes Sonic and Tails' movesets to be similar to Sonic Adventure.

Sonic 2 Adventure Edition is a hack of Sonic 2 by MainMemory, based on Sonic 2 Adventure Control. It transplants various gameplay mechanics from Sonic Adventure to Sonic 2.

Sonic 2 Armageddon Game is a hack of Sonic the Hedgehog 2 for the Sega Mega Drive/Genesis by xenoSonic. The layouts of the first four zones of the game have been altered, with the rest of the original levels unaltered. Additional levels are planned, but as yet are not implemented.

Sonic 2 Build A Burger is a hack based on Sonic 2 that captures the spirit of customization to a full "T". Thanks to the revolutionary menu system created my Vladikcomper, this hack now takes your experience of Sonic the Hedgehog 2 and multiplies it ten fold. Nearly every kind of option for your custom Sonic 2 has been considered and placed in the easy to use menu system. Because of this, each person can now create a custom Sonic 2 game at the touch of a button without ever having to mess with an external website, download links, or whatever else.