| 摘要 |
PROBLEM TO BE SOLVED: To further enhance interest in a game by a performance using operation means.SOLUTION: A performance control microcomputer is configured to allow a mode of an operation button to change to one of a plurality of modes ("white", "red", "white/vibration", "red/vibration" according to a degree of expectation toward jackpot game states, and displays an operation promotion image 9a in one of a plurality of modes ("white/small (size)", "red/small", "white/large", "red/large") according to a degree of expectation toward jackpot game states. However, the performance control microcomputer is configured to display the operation promotion image of a mode common to a plurality of modes of the operation button. |
