Delirium is the name of three Frisbee rides located at three Cedar Fair parks – California's Great America, Kings Island, and Kings Dominion. The installation at California's Great America, the smallest of the three, was designed by Chance Rides and opened in 2002. The installation at Kings Island was designed by HUSS Park Attractions and opened on April 12, 2003, as the largest Frisbee ride of its kind in the world. The record-setting ride is able to swing 50 passengers up to 76 mph (122 km/h) reaching a height of 137 feet (42 m). Mondial manufactured the version of Delirium at Kings Dominion, which opened in 2016. It accommodates up to 40 passengers, reaches a top speed of 60 mph (97 km/h), and swings to a maximum height of 115 feet (35 m).

The Frisbee is a type of pendulum amusement ride featuring a circular gondola that rotates as it swings back and forth. Riders are seated on the gondola facing inward or outward, depending on the model. On some models, the entire pendulum makes a full 360 degree swing.