 A Wii console running a GameCube disc is restricted to GameCube functionality , and GameCube controller is required to play GameCube titles . A Nintendo GameCube Memory Card is also necessary to save game progress and content , since the Wii internal flash memory will not save GameCube games . Also , backward compatibility is limited in some areas . For example , online and LAN @-@ enabled features for Nintendo GameCube titles are unavailable on the Wii , since the console lacks serial ports for the Nintendo GameCube Broadband Adapter and Modem Adapter . 
