To provide a game table of high strategic characteristic where a player selects a stake to acquire more game mediums.
A slot machine 100 is provided with internal lottery table data in which the lottery probability of a prize-winning role is different by each game state and each stake of tokens. During a special game, the machine is shifted to a role object game only by the result of internal winning, so that the player cannot discriminate whether a present game state is the special game of the role object game. However, in the case of prize-winning to the special game 1, a player gets to know an optimal stake since navigation of one stake is carried out during the special game and that of two stakes is carried out during the role object game. Thus, the tokens can efficiently be acquired.
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