| 摘要 |
PROBLEM TO BE SOLVED: To dissolve a problem that a game does not provide expectations since a prize is not won till a prize-winning period comes in a slot machine which stores a prize-winning role and controls the period for prize-winning in the prize-winning role. SOLUTION: The prize-winning period is determined by lottery, so that a player performs playing with expectations at each game. COPYRIGHT: (C)2003,JPO
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