| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine which can detect a fraudulent act more surely to detection means for detecting a game medium and take a surefire measure against the fraudulent act.SOLUTION: Respective game balls entering a first start winning port 13a or a second start winning port are detected by two sensors (a first start port switch 14a, a second start port switch 15a comprising a proximity switch and a first winning confirmation switch 14b, a second winning confirmation switch 15b comprising a photosensor) which are different in detection methods. On the basis of detection results of the respective first start port switch 14a, 15a and the first and second winning confirmation switches 14b, 15b, abnormal winning to the respective start winning ports is determined. Since a game board is transparent, first passages 1360a, 1360b through which game balls entering the first start winning port 13a pass and second passages 1370a, 1370b through which game balls entering the second start winning port are overlapped and arranged in the front and back positions.SELECTED DRAWING: Figure 37 |
