To provide a slot machine with excellent property capable of enhancing game property by generating proper continuous winning games while suppressing a speculative property within a proper range.

An inside-lottery tool 41 of the slot machine 1 turns a plurality of combinations including a bonus combination into objects for the inside-lottery, while increasing inside-winning probability of at least one combination among replay combinations and small-prize combination higher than that in the ordinary condition in a first bonus state where a bonus combination flag is not established. Further, the bonus combination is excluded from the object for the inside lottery and the inside-winning probability of at least one combination among the replay combinations and the small-prize combinations is increased higher than that in the first bonus state in a second bonus state where the bonus combination flag is established.

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