| 摘要 |
A first collision determination area and a second collision determination area moving concurrently with a motion of a player character are set, and a collision of the first or second collision determination area against an object is detected. Each time a collision of the first collision determination area against an object is detected, an influence to be exerted on the object which has collided against the first collision determination area is determined as being one of a plurality of preset influences at a predetermined probability. Each time a collision of the second collision determination area against an object is detected, an influence to be exerted on the object which has collided against the second collision determination area is determined as being a predetermined influence. The display state of each object is changed to a display state in accordance with the respectively determined influence.
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