| 摘要 |
PROBLEM TO BE SOLVED: To provide a pinball game machine to be appropriately operated even when a plurality of symbol starting ports are arranged. SOLUTION: In this pinball game machine 2, a lottery process to determine whether a jackpot condition is generated or not is carried out based on a value of a random number generating counter 61 when a game ball gets into symbol starting ports 17A, 17B for prize winning. The lottery process is executed by each prize winning in a cyclic executing part repeatedly executed at every prescribed time P (S21, S22). The updating interval of the random number generating counter 61 is set to be a half of the prescribed time P. COPYRIGHT: (C)2007,JPO&INPIT
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