Using a GameCube Controller on Wii: You Need an Adapter

You cannot "program" a GameCube controller to work natively on Wii. The Wii uses Bluetooth for Wii Remotes; GameCube controllers use a proprietary wired protocol (serial over the GC port). They are electrically incompatible.

Solution: Hardware Adapter

• Official Nintendo GameCube Controller Adapter (Wii U / Switch): Works on Wii (plug into USB port). 4 GC ports. Best compatibility, lowest latency. Discontinued — used $40–80.
• Mayflash Magic-NS / Magic-S Pro: USB adapter → supports GC, PS3, PS4, Switch Pro, Xbox controllers on Wii/PC/Switch. $25–35. Update firmware.
• Raphnet GC/N64 to USB: DIY / prebuilt. Gold standard for latency (polling 1000 Hz). $35–50.
• Wii U Mode: If you have a Wii U, GC controllers plug directly into front USB (via same official adapter) for Wii U games + Wii Mode (VC/WiiWare). Not for GameCube discs.

Game Compatibility

• Wii Games: Most do not support GC controller (exceptions: Super Smash Bros. Brawl, Mario Kart Wii, Tatsunoko vs. Capcom, Call of Duty: MWR — check manual).
• Virtual Console (N64, SNES, NES, Genesis): Fully supported via adapter.
• GameCube Discs (Wii RVL-001 only): Native support — no adapter needed (uses front GC ports).

Best Buy Today

Mayflash Magic-S Pro — cheap, multi-console, firmware-updatable, low latency. Pair with original Nintendo GC controller (WaveBird = wireless via receiver).