| 摘要 |
PROBLEM TO BE SOLVED: To provide a slot machine which makes the opportunities as the drawing for the winning of the specified games (RB win) to one chance for earning the winning of the specifically introduced game (BB win) when the number of the game won is accumulated to reach the total equivalent to n times thereof. SOLUTION: The slot machine is provided with a drawing selection means 150 which lets the players select whether the drawing for the winning of the specified game prize is allowed or not when the opportunity as the drawing for the winning of the specified game prize (RB win) is granted, an opportunity reservation means 160 for reserving the opportunity as the morgage for the winning of the specified game prize (RB win) when the players make the selection to the effect that the players are not allowed to get the drawing for the winning of the specified game prize (RB prize winning) and an opportunity shifting means 170 for shifting the opportunities as the drawing for the winning of the specified game prize equivalent to n times of the game involved in the reservation to one chance for earning the winning of the specified introduced game prize (BB win). COPYRIGHT: (C)2005,JPO&NCIPI
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