The lack of multiplayer action in Super Mario 64 bothered one game modder so much he hacked the game to include cooperative multiplayer as well as online play. Check out the video to see it in action.
To play the new version of the game you’ll either need a jailbroken Wii (so you can load a homebrew WAD file) or an N64 PC emulator. You can grab the WAD file for the Wii here or the necessary files for the PC emulator here. For more information about other great mod projects from the author of this mod, hit up the link below.