| 摘要 |
PROBLEM TO BE SOLVED: To prevent anything such as a piano wire to intrude from below or the side of a game board, without the restriction of a playing area, so as not to illegally win prizes and raise the rate of winning prize by, for example, bending critical pins at a starter slot and destroying structures of the game board, etc. SOLUTION: In the game machine, a plurality of structures which causes a change in the behavior of game balls is so arranged as to stick out to the window part side from the surface of the game board. A defending member which closes the space between the window part and the structures closely in contact with the window part is built across the surfaces of the individual structures within the playing area. COPYRIGHT: (C)2007,JPO&INPIT
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