| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine capable of securely detecting a fraudulent act to detection means which detects game medium, without increasing processing burden of game control means.SOLUTION: A presentation controlling microcomputer for controlling a presentation display device, on the basis of a command indicating the state of an input port from a game controlling microcomputer, determines that an abnormality occurs when the period in which input of a detection signal from a switch for detecting winning of a game ball continues or input frequency of the detection signal exceeds a predetermined threshold. |
