To make generable the image of a player character located at a distance from a virtual camera without interference of obstacles by moving the virtual camera so as to enlarge the angle of elevation to the virtual camera as the location of the player character displayed on the a screen is moved in the depth direction of the screen.

A virtual camera 220 is moved by changing the angle of elevation from θ1 to θ3 indicated in 220-1 to 220-3 from a predetermined reference location according to the location of a player character 240 in each game screen. In other words, as the location of the player character 240 is moved in the depth direction of the screen as shown in 220-1 to 220-3, the location of the virtual camera 220 is changed from 220-1 to 220-3 to enlarge angles of elevation from θ1 to θ3 from a predetermined reference location 250 to the virtual camera 220. By heightening a bird's-eye location in this way to make an extensive view to the rear of the screen attainable, it becomes easier to see the player character 240 in the rear of the screen in comparison with looking down the player character 240 from a low bird's-eye location.