| 摘要 |
PROBLEM TO BE SOLVED: To eliminate a problem of difference in prize winning ratios depending on the position of a guide member when a power switch provided in a game machine is switched on. SOLUTION: When a game ball is detected by a determination detector 49 through a guide member 30, a lottery is conducted based on a prize number for composing prizes or the like of circular numbers. Rolling time of a game ball from the guide member to reach the determination detector 49 is prevented by changing speed of a stepping motor (S202), for example.
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