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.

Knuckles in Sonic the Hedgehog is a fan-made ROM of the game Sonic the Hedgehog for the Sega Mega Drive/Genesis, featuring the character Knuckles the Echidna in place of Sonic the Hedgehog, the game's usual protagonist. The history of the game begins with the release of the Mega Drive game Sonic & Knuckles. The unique cartridge featured "Lock-On Technology" and allowed players that also owned the game Sonic the Hedgehog 2 to link the two together and play the game through as Knuckles instead of Sonic. However, partly because of a poorly matching colour palette, no such feature was included in the first Sonic game (instead, attaching Sonic 1 to the Sonic & Knuckles cartridge unlocked the full version of Blue Sphere). In the ROM hacking community, creating a patch that allowed the gamer to play as Knuckles in Sonic the Hedgehog was considered the "Holy Grail of ROM Hacking." On September 1, 2005, Stealth created a hack that allowed a player to do just that. His hack was called Knuckles the Echidna in Sonic the Hedgehog (Knuckles in Sonic 1, or S1K for short) Knuckles in Sonic 1 one gives Knuckles all the moves he has in Sonic and Knuckles, including gliding, wall climbing, and the spin dash. Not only that, Knuckles can transform into his Super form once he obtains all the emeralds (a cheat must first be enabled).

Knuckles' Emerald Hunt is a hack that, as its name indicates, focuses entirely on Knuckles hunting for Emeralds through all the Zones of Sonic 2 (excluding Sky Chase and Death Egg), along with a few extra levels.This hack made by MainMemory

Last Action Hero is a series of action video games based on the film of the same name. Versions were released for various systems; including the NES, Super NES, Sega Genesis, Game Boy and Sega Game Gear. A Sega Master System version was also developed, but never released. All versions of the game faced an even poorer reception than the film, receiving mostly negative reviews due to its poor graphics, limited set of moves and repetitive gameplay. A separate version was released on the Commodore Amiga and was developed by Psygnosis. Only the MS-DOS version offers cut scenes from the actual motion picture.

Leander is a computer game for the Commodore Amiga developed by Traveller's Tales and published by Psygnosis in 1991. It was the first game to be developed by Traveller's Tales. Leander is likened to an earlier Psygnosis game Shadow of the Beast released in 1989. It was designed to run on the earliest Amigas with only 512KB of Chip RAM, such as the Amiga 1000 and A500, which pushed the then 6 years old OCS chipset to its limits. The original version was developed on the Amiga, then it was converted by Philipp Wyatt for W.J.S Design on the Atari ST. A year later it was ported to the Sega Mega Drive as The Legend of Galahad and published by Electronics Arts.