The Nunchuk in particular has the same analog stick placement as it did in the final version, while the Remote has a few of its buttons named differently. It also appears to have a slightly flatter design than the one Nintendo decided to go with.
これがやりたかった!
— スペマRP (@spmrp) October 27, 2018
Revolution用のリモコン、ヌンチャクを入手しました。
ゲームキューブコントローラーの端子を使っているのでゲームキューブに取り付けることが出来る!(使えないけど…。)#レトロコンシューマー愛好会 pic.twitter.com/6FTaXrET1E
According to Eurogamer, the prototype was initially unveiled earlier this month after a kit was put up for sale on a Japanese Yahoo Auctions site. In addition to images of the sensor and controllers, it also featured a shot of the Remote controller connector, which is identical to that on a standard GameCube controller. Interestingly, the connector for the Nunchuk looks similar to an Ethernet cable.
Though it could otherwise potentially be written off as a well-designed hoax, WayForward developer James Montagna confirmed the controllers' authenticity, saying he remembered seeing them back when the Wii was still called the "Nintendo Revolution." He added that the control pad and several buttons were pulled straight from the Game Boy Advance SP.
Nintendo's seemingly prototyping something brand new at the moment, with a new version of Switch reportedly planned for next year - here's what we want them to add if that's true. Gabe Gurwin is a freelance writer for IGN who still thinks Revolution is a better name than Wii. Follow him on Twitter.