| 摘要 |
PROBLEM TO BE SOLVED: To prevent a player's expectation from being reduced when symptom preservation is displayed.SOLUTION: In a preservation ball 1 and a preservation ball 2 in which variations are executed in advance, normal preservation display [○] is executed. In a thirdly-stored preservation ball 3, it is determined, by preceding determination, that a zone performance (for example, a low-zone performance) being a continuous performance higher in expectation than a normal variation performance should be executed. In the preservation ball in which it is determined that the zone performance should be executed, symptom preservation display [black circle] is displayed at a high probability. When the symptom preservation display [black circle] is in display, the zone performance is executed at a high probability than the case of the normal preservation display [○]. |
