| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine capable of monitoring abnormal ball entries to a ball entry port including a fixed-type start port and an ordinary winning port.SOLUTION: In a game machine which dispenses a predetermined number of prize balls with a ball entry into a ball entry port as a trigger, each time a game ball enters the ball entry port, the counter value is stored and a comparison process is executed to make comparison between the counter value stored in association with the game ball entering the ball entry port most recently and the counter value stored in association with the game ball entering the ball entry port before a predetermined number of game balls, including the game ball entering most recently. If the comparison result shows that the time required for entrance into the ball entry port by the game balls equal to or greater than the predetermined number of game balls, including the game ball entering most recently, is equal to or less than predetermined time, an abnormality signal is output, indicating that an abnormality has occurred in a ball entry state of the ball entry port. |
