A 3-dimensional video game apparatus comprises display 40 for displaying
an image; image-processing means 16 for creating a 3-dimensional image from
the viewpoint of a simulated camera and displaying that image on a display screen;
and game controller 14 which conducts the game in response to reactions
of the player, responsive to images displayed on display 40. The game apparatus
further comprises camera unit 42 which can be arranged in such an orientation
that its field of view is the play area in front of the display screen, and which
periodically captures images of the play area in the state thus arranged; a position
recognizing part which detects the player's head from the captured image, and detects
the two-dimensional movement of the detected head position; and viewpoint change
processor which moves the viewpoint of said simulated camera in conjunction with
the change direction and change amount of the position of the detected marked region.
