| 摘要 |
PROBLEM TO BE SOLVED: To enhance interest in a game when determining a period of time when a winning probability of a jackpot lottery is set to be in a high-probability state of lottery.SOLUTION: Performance contents of a performance executable by a performance display device based on a main variation pattern and a sub-variation pattern that can be determined in winning of drop drawing are made different depending on performance contents of a performance executable by the performance display device based on a main variation pattern and a sub-variation pattern that can be determined in losing of drop drawing. |
