A plurality of gaming terminals each having a terminal display on which a plurality of symbols are provided, a plurality of upper displays forming a single common effect display screen which is constituted by gaming terminal areas corresponding to the respective gaming terminals, and a center controller are provided. When the common game starts, the center controller displays a common game start effect image on a common effect display screen and transmits a common game start effect image display command to the gaming terminals so that the common game start effect image divided for respective gaming terminal areas is displayed on the terminal display of each of the gaming terminals corresponding to the gaming terminal areas.