Abstract: A circuit race type game system is played by a plurality of players while running game racing cars on a circuit course. The circuit course includes a plurality of position indicating markers located thereon. The game racing cars run on the circuit while detecting the position indicating markers. A play field includes a host computer which receives a marker detection signal from each of the game racing cars to grasp the state of that game racing car running on the circuit course. Lap time for each lap and final lap time required by each of the game racing cars from the start to the goal are computed by the host computer as running time, these computed values being then displayed on a display panel with the ranking of that game racing car.