Information processing program, an information processing apparatus, information processing method and information processing system

An information processing program (401, 402) to be executed by a computer (31) is provided. The information processing program causes the computer to function as: preferential display object placing means (311, S1) for placing a preferential display object (105) in an imaging range of a virtual stereo camera (106) in a virtual three-dimensional space; stereoscopically visible image rendering means (312, S21 to S27) for taking the virtual three-dimensional space using the virtual stereo camera, and rendering a stereoscopically visible image of the virtual three-dimensional space; and display control means (312, S28) for causing the display apparatus to display the stereoscopically visible image rendered by the stereoscopically visible image rendering means. The stereoscopically visible image rendering means renders the preferential display object by using a parallax based on a first depth from the virtual stereo camera, according to a preference order based on a second depth, shallower than the first depth, from the virtual stereo camera.