I find this strange, but... it just doesn't work at all. It just crashes after the file select screen with the Mario 64 config, and doesn't even load the title screen without it. The most confusing part of it is, even with its notoriously bad compatibility, it is available for the Wii's VC as a WAD file, and works fine on it. Honestly, I think this is one of the few times something works on Wii VC, and not Wii U's... In this case, I'd blame the config files - they seem to have specific memory addresses, quickpatches, etc that all refer to a Mario 64 ROM, and therefore don't work with the multiplayer mod. The part I'm most confused about though... why is it that the Wii U VC needed so many different quick fixes and such, and the Wii's didn't?