Up The Romhack
Parent game
A 2D platformer and first entry on the SNES in the Super Mario franchise, Super Mario World follows Mario as he attempts to defeat Bowser's underlings and rescue Princess Peach from his clutches. The game features a save system, a less linear world map, an expanded movement arsenal and numerous new items for Mario, alongside new approaches to level design and art direction.
Could be interesting
A fangame for the unlikely run 'n' jump series Giana Sisters.
SM64 GBA is a non-profit fan project which aims to make a port of Super Mario 64 (along with new features, like new characters) for the Game Boy Advance. The project was started as a means of testing and improving how 3D games can be developed for the Game Boy Advance architecture, a capability that only a few commercial games made use of. The game is still in development, but isn't currently intended to be released officially by the creator.