It is an object of the present invention to move a viewpoint position and a direction of a line of sight a player character with an intuitive operation method without requiring pre-study. In a case where a player touches a point within a movement determination region, a virtual 3D spatial image moved forward in the direction of the line of sight is displayed. In a case where a player touches a point at the left side outside the movement determination region, a virtual 3D spatial image as viewed by a virtual camera panned to the left is displayed, whereas in a case where a player touches a point at the right side, a virtual 3D spatial image as viewed by a virtual camera panned to the right is displayed. Furthermore, in a case where a player touches an upper point, a virtual 3D spatial image as viewed by a virtual camera tilted in the upper direction is displayed, whereas in a case where a player touches a lower point, a virtual 3D spatial image as viewed by a virtual camera tilted in the lower direction is displayed.