| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine capable of stably detecting an illegal conduct using a magnet without decreasing visibility of a playfield, and moreover reducing possibility of erroneous detection.SOLUTION: The game machine 1 includes: a front frame member 3 having a window 5, which is arranged at the front of a game board, for enabling visual recognition of the playfield; a coil 8 wound along the periphery of the window 5; and sensors 9a and 9b, arranged in the front frame member 3, for detecting an object near the window 5 on the game board. When the coil 8 generates an induced electromotive force, and also in an illegal-act-detecting state in which the sensors 9a and 9b detect the object near the window 5, the illegal act is detected on condition that the number of winning balls in a predetermined winning pocket in a predetermined period of time is a predetermined number or more. Further, the illegal act is detected on condition that the coil 8 generates induced electromotive force and that the illegal-act-detecting state, in which the sensors 9a and 9b detect the object near the window 5, is detected a predetermined times or more in a predetermined period of time. |
