| 摘要 |
PROBLEM TO BE SOLVED: To provide a pachinko game machine which can make an efficient use of the whole game area and has two game characteristics of aiming a ball into a prize hall or letting it pass. SOLUTION: The pachinko game machine is structured in such way that a ball is launched onto a certain game area by the operation by a player and the launched ball enters into any of the ball receiving holes while drifting down the game area. On the lowest part of the game board 12 one or two or more 'SAFE' holes are arranged, while one or two or more 'OUT' holes are arranged above the 'SAFE' holes. The 'OUT' holes are provided with an opening degree adjusting plate in the proximity and the probability of a ball entering into the holes is changed by opening and closing the plate.
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