We've seen people make static maps, sure, but this is something else entirely. This is an attempt to bring the entire game of Ocarina of Time from the 3D world of the N64 to the 2D world of the SNES (or, well, the PC).
It's nothing if not ambitious. There's a day/night cycle, a downgraded soundtrack and the game's signature time system. Even OoT's cutscenes have been redone in 2D.
The project is nowhere near finished, but you can actually download a demo and try out the parts that are right now.
[via Zelda Informer]