Super Mario Hacks 2007
A downloadable game
mario1.zip contains Jerry's Remix 1 of SMB1, mario2.zip includes Super Mario Bros: Jerry's Remix 2 <- only 4 worlds were finished. mario3.zip contains three single-world-or-less creations for Super Mario Bros 3 before I finally stopped. The first zip is the only full game.
Requires functioning Nintendo Emulator for whatever platform you wish to use these in order to play.