Wii Nunchuk
From GamerWiki
The Wii console's wireless Wii Remote can be connected to a peripheral device, known as the Wii Nunchuk. This gives the user additional control over their character, by allowing analogue stick control to be added to the input options. This device will be initially used by First Person Shooter games, such as Metroid Prime 3: Corruption, available for launch on the Wii.
