| 摘要 |
PROBLEM TO BE SOLVED: To allow a player to surely acquire the number of retention storage without decreasing visibility of display means.SOLUTION: During a non-variable time-shortening state, a performance display device makes a second retention image display area Hb smaller than a first retention image display area Ha. During the non-variable time-shortening state, a plurality of second operation-start retaining balls are hard to be stored, so that even if the second retention image display area Hb is formed larger, it is highly possibly in vain to form the large display area. During the non-variable time-shortening state, there is no need to remain the second retention image display area Hb large for displaying the second operation-start retaining balls that are hard to be stored. A performance image relating to a symbol variation game can be thus displayed maximally in the performance display device and the visibility of the performance display device is not decreased. Even when the second retention image display area Hb is minimized, a retention image X2 is displayed to indicate the number of the second operation-start retaining balls, so that the player can surely acquire the current number of the second operation-start retaining balls. |
