Last weekend, a Japanese auction site revealed an incredibly rare version of Nintendo's Wii remote: one designed for the GameCube. At least one game developer has already attested to its legitimacy. The previously unrevealed remote controller sold for ~$663 at auction, and it looks incredibly similar to what eventually launched for the Wii. The button layout and shape of the remote looks quite similar, and it includes a paired "nunchuk" controller and sensor bar. But unlike the wireless Wii controller that eventually launched in 2006, this one is hardwired—and includes a GameCube controller connector at the end of its apparently long cord.