| 摘要 |
PROBLEM TO BE SOLVED: To execute a performance with unpredictability by preventing a player from easily recognizing the type of a specific game condition. SOLUTION: When a jackpot type is determined to be the "fourth probability variation", an opening/closing plate of a special variable winning ball device 7 makes a jackpot pocket open for a predetermined period (for example, for 0.5 second), defined as a second period, to execute a control changing a special variable winning ball device 7 to a first state advantageous to the player and execute a performance operation in the sudden probability variable performance, similar to a case when the jackpot type is determined to be a "sudden probability variation", to the halfway process of the game. The method prevents the player from easily recognizing whether the jackpot game state becomes a 2-round jackpot state or an apparent sudden probability variation 15-round jackpot state so as to execute the performance with further unpredictability in a variable display of decorative symbols and in the jackpot game state. COPYRIGHT: (C)2010,JPO&INPIT |
