This cable, when used with specially designed games, allows you to connect the Game Boy Advance to the GameCube. The features available will change depending on the game, from exchanging data or unlocking new game levels to allowing the Game Boy Advance to be used as a supplemental game screen or input device. Only games displaying the icon "Game Boy Advance Compatible" (on the back of the GameCube games) or "Nintendo GameCube Compatible" (on the back of the Game Boy Advance games) can be used with this cable.