TIL You can use gamecube controller in Mario Kart Wii : r/wii
Amazon.com: Super Smash Bros. Edition GameCube Controller : Video Games
GameCube Controller Adapter for Wii U, Nintendo Switch and PC USB – Lexuma
Wired Gamepad For NGC GC Game For Gamecube Controller For Wii &Wiiu Gamecube For Joystick Joypad Game Accessory Gamepads - AliExpress
Wii U GameCube Controller Adapter - What it could really mean for Nintendo?
Amazon.com: Dliaonew 2.4G Wireless Gamecube Controller, Classic Gamecube Wii Controller with Receiver Adapter for Wii Gamecube NGC (Pink and Blue) : Video Games
How to: Use a Gamecube Controller for the Wii U! - YouTube
Tutorial: How to use your GameCube Controller Adapter for Wii U on the vWii - YouTube
Amazon.com: Gamecube Controller Wired Controller Gamepad Compatible with Nintendo Wii/GameCube Enhanced : Video Games
List of GameCube Controller-compatible Wii video games - Codex Gamicus - Humanity's collective gaming knowledge at your fingertips.
White Wii U GameCube Controller Adapter Spotted - News - Nintendo World Report
Petition · Develop a Gamecube controller style Wii U controller · Change.org
Amazon.com: FIOTOK Gamecube Controller, Classic Wired Controller for Wii Nintendo Gamecube (Pink & Purple-2Pack) : Video Games
Amazon.com: Hyperkin ProCube Wireless Controller for Wii U (White) : Everything Else
Request] GameCube controller mod to enable use on home screen to select channels or to start game disk : r/WiiHacks
How to use the Official GameCube Controller Adapter for Wii U in Dolphin - Dolphin Emulator Wiki