Luigi in Sonic 1 is a ROM hack or fan-made modification of the classic Sega Genesis game, Sonic the Hedgehog. It replaces Sonic with Luigi from Nintendo's Mario series. The gameplay mechanics retain the core platforming elements of Sonic 1, although the character's abilities and potentially level design will be affected by the substitution of Luigi. No official developer or publisher exists for this modification.

Luigi in Sonic 1

Lotus II (USA, Europe)