what kind of disc does wii use
Nintendo optical discs. Nintendo optical discs are the optical disc format used to distribute video games released by Nintendo. This includes the GameCube Game Disc, Wii Optical Disc, and Wii U Optical Disc. The physical size of a GameCube Game Disc is that of a miniDVD, and the Wii and Wii U Optical Discs are the size of a DVD.