That game which gets confused with ITR. This is a dance game, an offshoot of DDR which has more tiring songs and harder difficulties. It also tends to have more rock and trance music, as opposed to the heavy amounts of JPop in DDR games.
There used to be an arcade machine in the University Center (Scotland Yard game room), but that machine has been sold to a person from the Internet. There is still a good machine in the Commons of the University of Pittsburgh.
Also, shoutout to Team Dragonforce!