| 摘要 |
PROBLEM TO BE SOLVED: To improve interest in a game by enabling play with freshness in a probability variation and tension or expectations on whether or not a probability is to be varied. SOLUTION: In a game machine provided with a decision means for deciding whether a game is a success or failure on the basis of the establishment of decision conditions, a decided result display means for displaying the result decided by the decision means, a decision probability variation determining means for determining whether or not the probability of the decision of the success in the decision means based on the establishment of the prescribed conditions is to be varied to a high probability and a prize value applying means for applying a prize value to a player on the basis of the success in the result decided by the decision means, an execution timing determining means is provided for determining a timing to execute the decision probability variation when the decision probability variation is determined by the decision probability variation determining means and an announcement means is provided for executing the decision probability variation in the timing determined by the execution timing determining means and announcing that the decision probability variation is under execution when the decision probability variation is executed.
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