Apparently, on October 28th, 2018, a prototype Wii remote and Nunchuk was sold at an auction in Japan. This is what the Wii Remote and Nunchuk look like in comparison to the final: As you can see, there are several major differences, including: The Wii Remote is wired to the Gamecube controller port, and the Nunchuk is wired by an ethernet cable. The sensor bar (not pictured) plugs into the Memory card port. The Wii Remote prototype is considerably smaller. 1 and 2 are labeled as a lowercase "b" and "a," and the labels are not on the buttons, rather on the side. The analog stick on the Nunchuk is like a Gamecube analog stick. There is no power button. There are no speakers. There is, however, a home button, for some odd reason. There are no player indicator lights (pretty obvious why, as they are wired.) There is no wrist strap. The sensor bar (not pictured) is much bigger and bulkier than the final. Surprisingly, this matches up with a patent made by Nintendo for a sort of Wii Remote for the Gamecube. However, the patent has a wireless reciever (most likely similar to the Wavebird's) for the remote instead of a wired connection. Personally, I think this is a really nice find! It was confirmed to be legit, so that's great!