Plot: In the Groove is a series of music video games that uses a four-panel dance pad. The series was first developed by Roxor Games during a time when four-panel dance games in the arcade market were on the decline. As of October 18, 2006, Konami has acquired the intellectual property rights to the series...
Plot: StepMania is a cross-platform rhythm video game and engine. It was originally developed as a clone of Konami's arcade game series Dance Dance Revolution, and has since evolved into an extensible rhythm game engine capable of supporting a variety of rhythm-based game types. Wikipedia