The wireless Wii Remote controller is a multifunctional device that is limited only by the game designer's imagination. In a tennis game, it serves as your racket you swing with your arm. In a driving game, it serves as your steering wheel. For first-person shooters, the remote acts as your weapon that you point at an enemy. The list of potential uses goes on and on.
In addition to its pointing and motion-sensing abilities, the Wii Remote controller also includes a speaker and expansion port for additional input devices, such as the Nunchuk controller.
The Nunchuk controller contains the same motion-sensing technology enabled in the Wii Remote controller but also includes an analog stick to assist in character movement. In several games, players will use the analog stick of the Nunchuk controller to move their characters and the Wii Remote controller to perform a specific action, whether that's throwing a pass in football or aiming a ranged weapon in an action game.
Along with the analog stick, the motion-sensing Nunchuk controller also contains two buttons positioned for quick access. Because the Wii Remote and Nunchuk controllers are only relatively dependent on each other, players are free to hold them in whichever hand is most comfortable. The ambidextrous nature of the Wii controllers grants accessibility seldom seen in game controllers.