| 摘要 |
PURPOSE:To control the balance between the number of prize balls obtained by a player and a business profit of a play shop without adjusting pins disposed on the surface of a playing board and to prevent the playing intention of the player even when he obtains many prize balls in a special playing from losing right. CONSTITUTION:A variable display control means 148 generates a state in which a prize probability to a special prize port in an auxiliary variable prize device is improved by driving and controlling the motor 70 of the auxiliary variable prize device with a variable right generating rate control means 156. The variable display control means 148 sets a condition for generating a high probability state in that the stopped picture pattern of a variable display device 27 in a preliminary play coincides with a specific picture pattern. Then, a specific picture pattern set control means 160 capable of optionally setting the specific picture pattern by operating a specific picture pattern set switch 108 is provided in a playing machine. |
