| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a pinball game machine that strictly monitors a fraudulent act during a jackpot game. <P>SOLUTION: The pinball game machine generates a jackpot game by repeating a round game up to a predetermined number of rounds. During one round game, the state of a jackpot pocket is changed from open state where a game ball is easy to enter it, to close state where the game ball cannot or hardly enter it, on condition that predetermined jackpot start conditions are satisfied. When the game ball enters the jackpot pocket (S232, S237) during a jackpot pocket invalid period (S233, S238), which is provided in an interval between the round games, a fraudulent winning is determined (S234-S235, S238-S239). <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
