| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a game machine in which prize winning probability into prize winning ports calculated from the number of shot game balls and the number of paid-out prize balls can be monitored with a construction capable of suppressing occurrence of fraudulent act and at a low cost. <P>SOLUTION: The number of operations of a ball shooting unit is stored in a shooting number counter and the number of prize balls is stored in a prize ball counter. In a prize monitoring process, when the value of the shooting number counter reaches 1,000 or more, the number of prize balls stored in the prize ball counter is compared with a prescribed number (2,400, 1,600, 1,200, 800), and when the number of prize balls becomes the prescribed number or more, a prize ball abnormality process (S1212) is executed. Accordingly, the extreme increase of prize balls are suggested outside. On the other hand, since the shooting number of balls is detected from the operation number of the ball shooting unit 112a, the prize winning probability can be monitored by the game machine without providing an external sensor to enable cost reduction, and moreover, the game machine can be formed into a desirable structure from a viewpoint of fraudulence prevention. <P>COPYRIGHT: (C)2012,JPO&INPIT |
