| 摘要 |
PROBLEM TO BE SOLVED: To realize a pachinko game machine with a big-win probability in a second-class pachinko game machine even when a game ball capable of being launched is absent at a time of a prize-winning at a starting opening. SOLUTION: When the game ball gets a prize-winning at the second-class starting opening (t2), in the case where not providing a launching device with a game ball is detected by a game ball detecting switch, an opening timing for a big-prize-winning opening is delayed. Subsequently, when providing a game ball is detected (t3), the big-prize-winning opening is made to open after a time of Th since then. The time of Th is required for a launched game ball travelling to get a prize-winning at the big-prize-winning opening. Thereby, even when the last, possessed, single ball is launched and gets a prize-winning at the second-class starting opening, a game ball put out by the prize winning is allowed to be launched and get a prize-winning at the big-prize-winning opening, maintaining a probability to produce the big win. COPYRIGHT: (C)2003,JPO
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