Dance Dance Revolution is the pioneering series of the rhythm and dance genre in video games. Players stand on a "dance platform" or stage and hit colored arrows laid out in a cross with their feet to musical and visual cues. Players are judged by how well they time their dance to the patterns presented to them and are allowed to choose more music to play to if they receive a passing score.
DDR is viewed as an exercise tool and is in use as such in many gyms and schools. The series has also inspired many clones of its gameplay and a global fan base of millions that have created simulators of the game to which they contribute original music and "simfiles", collections of dance patterns to a specific song.