http://www.cutstuff.net/mm8bdm

A multiplayer FPS game about Mega Man. Everything from Mega Man 1 through 8 has been translated to NES style and the FPS gameplay. Play CTF, Team Deathmatch, or Last Man Standing; all of the FPS standbys are here. It's also heavily moddable, so if you want to fight Flandre Scarlet with Megaman.EXE in a map made entirely of the letter Q, you can do that. Come join the forums, we need new users.