From Wikipedia, the free encyclopedia:
Just Dance is a music video game developed and published by Ubisoft for the Wii. It was released on November 17, 2009 in North America, November 26 in Australia, and November 27 in Europe.[1] It is similar to the Dance Dance Revolution games in which players use the Wii Remote and attempt to mimic the on-screen silhouette dancer.[2] Players earn points depending on what moves they perform and how well they perform them.
Source: Wikipedia, "Just Dance," available under the CC-BY-SA License.