Super Metroid: X-Fusion is a Super Metroid hack that recreates Metroid Fusion, with a large number of changes in the story, level design, and enemies while still be faithful enough to be considered a Fusion remake. Lots of bosses returning from the original game, as well as some X-infected versions of Super Metroid's bosses.
A straight port of Castlevania (NES) for the SNES. The game works the same, but with additional support for MSU1 enhancement for audio and the inclusion of the Easy Mode from the Family Computer cartridge version, the Hard Mode from Vs. Castlevania and the ability to change between two sub-weapons.
A troll hack of Super Metroid made for a friend that pokes fun at Super Metroid hacking as a whole, featuring many references to obscure and highly-specific things, intentionally poorly designed rooms, baffling design choices, and an utterly psychotic amount of custom assembly to create an utterly unhinged and bizarre playthrough of Super Metroid.