Wii MotionPlus is a small accessory that attaches to the bottom of a Wii Remote (or is built into the Wii Remote Plus) adding a 3-axis gyroscope alongside the existing accelerometer. This dramatically improves motion tracking accuracy.
Released 2010, this integrates MotionPlus inside the remote—no dongle needed. Identifiable by "Wii" text on the speaker grille and a slightly longer body. Backward compatible with all Wii Remote games.
MotionPlus transformed the Wii from "waggle" to genuine motion simulation. For the best experience, use a Wii Remote Plus or attach a MotionPlus dongle to your original remotes.