Why wont my GameCube controller work on vc. it only vibrates?

If your GameCube controller only vibrates when connected to the Virtual Console (VC) but doesn't respond to inputs, it could be due to compatibility issues. The GameCube controller is not fully compatible with all Virtual Console games, especially if they were designed for different systems. Additionally, ensure that the controller is properly connected and that your Wii or Wii U is updated to the latest firmware. If the issue persists, consider using a different controller or checking for any settings related to controller configurations.