GameCube Controller on Wii: Works for GC Games, Not Wii Games (Mostly)

GameCube controllers work on Wii — but ONLY for GameCube games.

What Works

• GameCube Games on Wii: Plug GC controller into top ports (under flap) → plays perfectly. Includes Melee, Mario Kart DD, Metroid Prime, etc.
• Wii Games Supporting GC Controller: Very few. Only:
  • Super Smash Bros. Brawl (fully)
  • Mario Kart Wii (fully)
  • Pokémon Battle Revolution
  • Animal Crossing: City Folk (partial)
  • Some Virtual Console / WiiWare titles.

What Doesn't Work

• Most Wii Games: Require Wii Remote (+ Nunchuk) for motion/pointer. GC controller lacks accelerometer, IR pointer, speaker, rumble (in Wii mode).
• Wii Menu Navigation: GC controller cannot navigate Wii System Menu.
• Wii U: No GC ports. Requires Wii U GC Adapter (official or Mayflash) — works only in Smash 4 / Homebrew.

Why?

Wii games are designed around Wii Remote's unique features (motion, IR, speaker). GC controller is traditional buttons/sticks — incompatible with core Wii gameplay.

Use GC controller for GC games (and those 5 Wii games). For everything else: Wii Remote + Nunchuk / Classic Controller / Wii U Pro Controller.