| 摘要 |
PROBLEM TO BE SOLVED: To prevent the intrusion of an intruding article such as a piano wire without receiving restriction of a game area regardless of the intrusion from the upper, lower, or lateral sides of a game board, and to prevent fraudulent winning or winning rate increase by bending a crucial nail of a start port or destroying a component for instance. SOLUTION: The game machine includes a game board for forming a game area where game balls roll and a front surface frame set having a window part through which the game area of the game board can be visually recognized, and the component is provided so as to project from the game board surface to the window part side inside the game area. The game machine is provided with a protection member which abuts on the window part and blocks the window part between the component to be a fraudulence target and the side part of the game board inside the game area. COPYRIGHT: (C)2011,JPO&INPIT
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