| 摘要 |
PROBLEM TO BE SOLVED: To provide a game system for enabling a player to participate in a lottery dividend or probability setting and changing by assuring fairness among players in a game system using lottery means.SOLUTION: A lottery game system including lottery means (30) for performing a lottery using a plurality of kinds of symbols, and dividend granting means (170) for granting a dividend on the basis of a lottery result by the lottery means and a dividend of each kind of the symbols includes dividend information setting means (312) for performing processing for displaying, on a screen, a dividend information setting screen image for changing dividend information including at least one between the dividend and the winning probability of each kind of the symbols within the range where divident expectation values of a lottery result by the lottery means are equivalent, and dividend information update means (130) for performing processing for updating at least one between the dividend and the winning probability of each kind of the symbols in the dividend information on the basis of a user's input to the displayed dividend information setting image. |
