http://cutstuff.net/blog/?page_id=1490

Anybody else check this out yet? I haven't tried playing multiplayer yet, but the single player campaign has been super fun (and hard to boot). 3-D death matches based on Mega Man 1-6 with a ton of different power ups and maps. It's based off the Doom 2 engine and lovingly built in 8-Bit classic Mega Man glory.