| 摘要 |
PROBLEM TO BE SOLVED: To enhance the playing potentialities of a pinball machines in the process until the win of the special pattern, serving as the conditions for starting the special games, is decided. SOLUTION: In a Pachinko game machine 10, a starter slot 112 is provided at the prescribed position in the playing area. A starter prize winning judgment means 214 executes the lottery at the prescribed probability to judge whether the valid period should be set or not responding to the drop of the game balls into the starter slot 112. When the result of the lottery is the win, a valid period control means 230 sets the given period as the valid period. A special game control means 208 shifts the game to the special game status advantageous for the players responding to the drop of the game balls into the specified slot during the valid period. When the game balls drop into a valid time extension slot or a valid time shortening slot during the valid period, the length of the valid period is changed properly. The specified slot, the valid time extension slot and the valid time shortening slot are so positioned as to let the game balls pass therethrough after passing through the starter slot 112. COPYRIGHT: (C)2006,JPO&NCIPI
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