Diverse System is a doujin music circle best known for producing numerous arranges of bemani songs (pop'n music, Dance Dance Revolution, beatmania IIDX, GUITAR FREAKS, drummania...). They also make arranges of other games, such as Touhou, 8bit games, Ragnarok Online, Ridge Racer or Jet Set Radio, as well as original compositions. The exact composition of this circle is unknown, as most of the arrangers appearing on their releases are guests (either as solo artists or from other circles).