Gran Trak 10 is a single-player racing arcade game released by Atari in 1974. In the game, the player races against the clock with the intent of accumulating as many points as possible. Primitive diode-based ROM was used to store the sprites for the car, score and game timer, and the race track. The game's controls — steering wheel, four-position gear shifter, and accelerator and brake foot pedals — were also all firsts for arcade games. Steve Wozniak played Gran Trak 10 during the four-day development of a prototype for another Atari game, Breakout.