TMNT Hacks?

[Powder]

Any roms out there that add something new to old NES/SNES games? There's an almost infinite amount of "new" games made out of old ones for series' like Pokemon & Super Mario World, as well as many others. With that said, has anyone come across any for the lean green teens? I'm aware of a hack of the original TMNT NES game that makes it even harder, and a super mario bros hack that uses Raphael in place of Mario, but that's it...