| 摘要 |
PROBLEM TO BE SOLVED: To provide a slot machine which does not stir up speculative spirit of a game player more than required, and has a high game property. SOLUTION: This slot machine performs a game using medals, credit cards or the like. When a BB winding occurs under a normal game state, the generation of a big bonus (BB) as a special game state wherein more medals can be acquired becomes possible, and the BB is made to end when a net increment of medals at least during the BB has reached a specified upper acquisition limit. Also, the BB comprises a super BB and a normal BB, and they have different expected acquisition quantities. COPYRIGHT: (C)2004,JPO
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