The Wii Nunchuk controller is a secondary controller that connects to the Wii remote.<br /> <br /> Used with the Wii remote - certain games need the Nunchuk controller for additional control options/movement.<br /> <br /> A Universal snug fit for Left or right hand players - the Nunchuk controller contains the same motion sensor found in the Wii Remote as well as an analogue stick - and two shoulder buttons..<br /> <br /> Many games will allow you to control your character's movement with the Nunchuk in one hand - while your other hand is free to use the remote.<br /> <br /> In first-person shooters (FPS) - the Nunchuk controller does the burden of movement - freeing you to aim and fire using the Wii remote.<br /> <br /> The Nunchuk controller doesn't need its own power - it plugs into the Wii Remote controller when it's in use.<br /> <br /> Adding a Nunchuk to your Wii remote will improve the gaming experience.