Konami Digital Entertainment Co., Ltd.

Akifumi Ishizuka

Tetsuhiro Honjo

Kenichi Miyaji

Hiromitsu Kanegae

A game apparatus includes a main apparatus, an image display apparatus including a display screen, a controller including an acceleration sensor, and a game executing section. The game executing section determines whether or not an acceleration signal generated is normal, based on a first half wave signal of the acceleration signal occurring in an axial direction when the controller is moved. The game executing section moves an image object based on a second half wave signal occurring subsequent to the first half wave signal and having a reversed polarity. The game executing section executes display control to move the image object back to a home position upon detecting that the second half wave signal reaches a peak. Thus, displaying the image object may be controlled according to the movement of the controller. The display control may be executed based on a normal acceleration signal without performing complicated steps.

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Tokyo, Japan

Akifumi Ishizuka