S.T.U.N. Runner (Spread Tunnel Underground Network Runner) is a fast-paced, racing/shooter arcade game released by Atari Games in 1989. The player pilots a futuristic "speed bike" at speeds of up to and even exceeding 900 mph through various tunnels and courses, with changing environments, hazards and enemies. The final goal is to reach the "Ultimate Challenge", an endless race filled with surprises, where the player must simply get as far as possible in the allotted time.