The original Just Dance was released for the Wii. It used the Wii Remote to detect players’ movements as they copied choreography performed by an on-screen dancer.
The Wii was especially suited to the game because its motion-control system was already familiar to a broad audience. Players generally held the Wii Remote in their right hand and followed the routine, while the game judged their timing and movement accuracy. This made the experience easy to start at parties, even for people who did not regularly play video games.
The original release was a Wii-exclusive title. Later games expanded to other platforms: Just Dance 3 introduced versions for the PlayStation 3 and Xbox 360, using PlayStation Move and Kinect respectively. The series eventually appeared on systems including Wii U, PlayStation 4, Xbox One, and Nintendo Switch.
Nintendo Switch is therefore a common mix-up: it became an important modern platform for the franchise, but it did not host the first game. The Wii also remained part of the series for many years; Just Dance 2020 was the final main-series entry released for it.