kiwitat&aacute;&reg; Gamecube Controller Adapter Converter for wii u Super Smash Bros New Third party made product The GameCube Controller Adapter allows you to connect up to four GameCube controllers (or wireless GameCube controllers) to a Wii U system With two GameCube Controller Adapters, up to eight GameCube controllers can be used at the same time Compatible with Super Smash Bros. Wii U. Easy installation; plug and play! Compatible with: For WII U