To promote players to shoot game balls to a variable prize winning device by being notified previously that the result is displayed openly by determining whether the result should be displayed openly or not prior to the start of the variable display.
A CPU 56 extracts individual random numbers each time the winning of starter prizes occurs to be housed into preservation regions corresponding to reservation memory counts in a reservation memory buffer while executing a determination on jackpot or minor win to house the result of the determination into preservation regions corresponding to reservation memory counts of the reservation memory buffer. When the minor win is earned as the result of the determination, a starter prize winning designation command for designating the minor win as the result of the determination is transmitted to a performance control CPU 101. The CPU 101 makes a reservation display showing the minor win on a performance display device 9 based on the result of the determination showing the minor win designated by the starter prize winning designation command while executing an advance notice performance for the minor win indicating the generation of the minor win.
Makoto Shiokawa
Takeshi Kawamura
Shuji Mano