Brawl that allows you to use gamecube controllers, via the official Nintendo Wii u Gamecube Controller Adapter. It's currently working using a .gpf file, compatible only with Gecko OS, but a standard ...

Made out of dual official Nintendo GameCube to USB adapters (intended for the Wii U) merged together in a 3D printed case, the final result looks like something that could earn the coveted ...

Click on the Controller icon or go to Options, Controller Settings and click on Configure next to any of the GameCube Controller entries (like Port 1: GameCube Adapter for Wii U) See if it says ...