| 摘要 |
PROBLEM TO BE SOLVED: To allow a player to listen to a BGM sufficiently by changing sound volume in a specific performance and hence changing an expectation value toward a jackpot regardless of predetermined sound volume (default sound volume) in a game machine and allowing the BGM appealing to the player to be emitted with designated sound volume.SOLUTION: In a lottery of a performance of a variation pattern, a lottery of the sound volume is also held, and the sound volume is adjusted based on the lottery result. Current sound volume is stored before the sound volume is updated. After completion of the performance, the setting of the sound volume is restored based on the stored sound volume. |
