| 摘要 |
PROBLEM TO BE SOLVED: To perform a saving measure for the portion of a privilege which is not obtained even when the obtained privilege does not reaches an upper limit. SOLUTION: A privilege overcarrying part 43 is provided with an RB mode privilege storage memory 50, a BB mode privilege storage memory 51 and a CT(challenge time) mode privilege storage memory 52. Unless a mode is shifted to an RB mode three times during a BB mode, a control part 30a writes the times of the RB mode which is not shifted in the BB privilege storage memory 51. Unless prize-winning is performed eight times in the RB mode, the control part 30a writes the times of unattained prize-winning in the RB mode privilege storage memory 50. Unless the net increase number of obtained medals reaches the upper limit during the CT mode, the control part 30a writes the unattained net increase number in the CT mode privilege storage memory 53. The times and numbers written in the respective memories are added to the upper limits of the respective succeeding modes.
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