| 摘要 |
PROBLEM TO BE SOLVED: To make players enjoy games for a prolonged period of time without feeling any boredom. SOLUTION: At a predetermined timing, a lottery is carried out for switching performance modes (stages) (shifting to stages) using a lottery table for shift destination stages having the probabilities determined of shifting to respective modes (stages) on a liquid crystal display panel 201 and performances are executed sequentially according in the performance modes (stages) acquired by the lottery. The execution history of the performance modes executed is displayed on a stage history image display screen 1310. COPYRIGHT: (C)2010,JPO&INPIT
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