Karaoke Revolution and its sequels are video games for the PlayStation 2 PlayStation 3 GameCube Wii Xbox and Xbox 360 developed by Harmonix and Blitz Games and published by Konami in its Bemani line of music games. The original concept for the game was created by Scott Hawkins and Sneaky Rabbit Studios. Technology and concepts from the game were subsequently incorporated into Harmonix's game Rock Band. The Japanese versions of the game are developed by Konami themselves. The gameplay also differs significantly. Rather than a game per se it is merely a karaoke system for the PlayStation 2 with no judgments.