Anyone can probably guess something is up when three different rhythm game franchises by three different companies lined up for the next NicoNico Super Conference, but today we have a crystal-clearidea of what is going on: a huge collaboration!
As you can see, the event is simply called Game Music Triangle, featuring the latest arcade versions of Taiko no Tatsujin, maimai and Groove Coaster. Nothing much else is known at the moment, but a Nicovideo broadcast is already planned for today, to talk about the NicoNico Super Conference 3's Super Game Area booths will feature. The stream airs tonight at 9pm (Japan Time), and the rhythm game talk is one of the first to be discussed.
Expect a short cover-up of today's broadcast soon!