| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine capable of distinguishing whether it is a fraudulent action of guiding a game ball to a desired winning port or is a fraudulent action with the risk of damaging the game machine. SOLUTION: In the case that a vibration sensor detects a prescribed vibration after a ball entry detection switch detects a game ball and before one of a special prize ball entry switch and a normal winning port switch detects the game ball, a CPU decides it as the fraudulent action of fraudulently guiding the game ball to the operation port of a normal pattern 1 to be the trigger of imparting a specified game state. In the meantime, in the case that the vibration sensor detects a vibration stronger than the prescribed vibration to be decided as the fraudulent action before the ball entry detection switch detects the game ball or after one of the special prize ball entry switch and the normal winning port switch detects the game ball, the CPU decides it as a disturbing action with the risk of damaging the game machine. COPYRIGHT: (C)2008,JPO&INPIT
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