a more versatile controller, opening up new Wii controller configurations and likewise multiple control schemes. Various racing games such as Mario Kart Wii and a few Need for Speed video games, as well as some fighting games like Super Smash Bros. Brawl, Tatsunoko vs. Capcom: Ultimate All-Stars and the Naruto: Clash of Ninja Revolution trilogy take advantage of the versatility the expansion port confers to offer multiple control schemes to suit different kinds of players. Nunchuk The Nunchuk (model number RVL-004) was the first attachment Nintendo revealed for the Wii Remote at the 2005 Tokyo Game Show. It connects to the Wii Remote via a cord 1 to 1.2 m (3.5 to 4 feet) long. Its appearance when attached resembles the nunchaku weapon, hence the name. It also resembles the middle handle of the Nintendo 64 controller. Like the controllers of the Wii's two predecessors, the Nunchuk has an analog stick whose movement is restricted by an octagonal area. The Nunchuk also has two trigger buttons (a last-minute modification changed the two triggers to one trigger and a button, as described below). It works in tandem with the main controller in many games. Like the Wii Remote, the Nunchuk also provides a three-axis accelerometer from STMicroelectronics for motion-sensing and tilting, but lacks any feedback features. The presence of a motion sensor in the Nunchuk allows the Wii controller to recognize gestures from both of the player's hands independently, a feature that is leveraged to implement boxing controls for Wii Sports or dual wield combat in some hack and slash games, such as Prince of Persia: Rival Swords. Despite having fewer buttons, the Nunchuk can also be used as a controller itself, a feature that is leveraged by Opoona, Bust-A-Move Bash! and SpeedZone. This allows two players to share a single Wii controller, enabling the multiplayer modes of Bash! and SpeedZone to support five to eight players across the maximum four Wii controllers that can be synced to a single console. One Nunchuk comes bundled with the Wii console. Additional Wii Remote units are sold separately without the Nunchuk. The two shoulder buttons, formerly named Z1 and Z2 respectively, have been reshaped and renamed from the Game Developers Conference on. The circular top shoulder button, now called C, is much smaller than the lower rectangular shoulder button, now called Z. The body of the Nunchuk is long, wide, and thick. The