Abstract: A realistic roller coaster simulator is disclosed having one or more passenger seats equipped with a safety harness and mounted for 360 degree rotational movement along at least two axes for simulating the motion of a roller coaster. A controller is provided for controlling and coordinating the motion of the simulator with a simulation controller which generates to the passenger synchronized audio and visual effects which would be experienced by a passenger on a roller coaster of a predetermined design. Linked to the simulator is a design station where a passenger can design his or her own roller coaster. Upon entering the simulator station, the passenger's design can be accessed from memory and selected for simulation on the simulator vehicle. Upon initiation of the simulation, the passenger can experience in real time the visual, motive, audible and other effects (such as wind, heat, cold, water, etc.) of the simulated roller coaster ride which the passenger has designed.