Putting together the electronics is fairly easy; just strip the ends of the controllers and screw them down to the terminal blocks. N64, NES and Wii Classic Controllers are supported by the Funtendo.
8BitDo has been working on a Nintendo 64-inspired controller to accompany the upcoming reimagined Analogue 3D Nintendo 64, and it is now available for preorder. Simply dubbed the 8BitDo 64 ...