SLOT MACHINE

PROBLEM TO BE SOLVED: To provide a slot machine capable of enhancing interest in a state where an increase in the amount of advantage affecting a period for controlling to an advantageous state advantageous to a player can be expected.SOLUTION: In an additional state comprising a plurality of games, an additional lottery 2 for determining the number of games to be added for each game is performed, thus determining addition of the number of games for each game. In the additional lottery 2 of each game in an additional state, a winning probability for determining the addition of the number of games is set higher than that of a game other than the final game in the final game. More specifically, since the additional lottery 2 is performed under the most favorably treated conditions in the final game in an additional state, interest in the additional state can be enhanced regardless of a result of the opening of the additional state.