| 摘要 |
PROBLEM TO BE SOLVED: To evade a player from being extremely disadvantageous state by opening or closing the opening/closing cover of a big prize winning port at the time of a big hit state under a special condition and updating the opening/ closing operation of the opening/closing cover when a game ball wins a prize in a specified port under a fixed condition in the big hit state. SOLUTION: When the game ball shooting on a game board 1 wins the prize in a second kind starting port 4b where movable blades 11a and 11b execute an opening/closing operation twice, for example, it is detected by an N-detecting equipment so as to transmit a detection signal to a movable blade control part. Thus, a solenoid is energized, the movable blades 11a and 11b are opened/closed twice and the big prize winning port 2 is made to be the open state twice. Thus, the game ball wins the prize in the big prize winning port 2 when the port 2 becomes the open state. When a prize winning ball wins the prize in prize winning ports 14a and 14b, for example, among the three prize winning ports 13, 14a and 14b, only bonus balls are discharged. But when it wins the prize in a V-prize winning port 13, the movable blades 11a and 11b are controlled so as to continuously execute the opening/closing operation.
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