According to statistics from research group NPD, 4 of the 10 top-selling titles across platforms in January were dance games. Just Dance 2, Zumba Fitness: Join the Party, Dance Central, and Michael Jackson: The Experience all had strong sales showings in the first month of the year. Among them, Dance Central employs the technology of Microsoft's Kinect motion-based gaming system, using a 3D camera to judge your speed and style as you bust a move.