A coaster that is much-loved, but quite rare. The original popped up in Japan, and the ride type has since evolved into multiple installations in the USA. The Impulse coaster is an inverted shuttle coaster that uses LIMs to launch a train out of the station and up a vertical tower. The train then falls backwards, is powered again through the station, and up a back tower. The train then falls forwards, and continues in this fashion for a total of 2 1/2 cycles per ride (three forward launches, two backwards). On the final forward launch, the train is sent up the front tower, and brakes then deploy on the launch track. The train then brakes and heads into the station.