| 摘要 |
PROBLEM TO BE SOLVED: To prevent invasion of an invader such as a piano wire from any of the lower side or lateral side of a game board without being restricted on a game area, and to prevent, for instance, bending an important nail at a starting port, damaging structural articles to illegally win a prize, or raising a prize winning rate. SOLUTION: In a game area of the game machine, a plurality of structures giving variation to behavior of game balls are set so as to project from a game board surface toward a window part side. In the game area, a protection member abutting on a window part to block between the window part and the structures is set so as to pass over a surface of individual structure. COPYRIGHT: (C)2011,JPO&INPIT
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