| 摘要 |
PROBLEM TO BE SOLVED: To provide a slot machine capable of making a shift of game state to/from an advantageous game state and a disadvantageous game state. SOLUTION: The slot machine can execute a first normal game and a second normal game. The first normal game executes a lottery of a BB prize but the second normal game not executes it. When an MB prize is won, the game state is shifted from the first normal game to the second normal game. In the second normal game, when the number of tokens acquired reaches a predetermined number, the game state is returned to the first normal game. Because a winning probability of a minor extra bonus prize is the same in the first normal game and the second one, a game player cannot judge whether the present state is in the first normal game or in the second one from a winning rate of the minor extra bonus prize. COPYRIGHT: (C)2006,JPO&NCIPI
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