1. A program product for generating an image, the program product causing a computer to function as: an event occurrence determination section which determines whether or not an effect event has occurred, an effect object being generated in the effect event; a position determination section which determines whether or not a virtual camera or a player's character operated by a player exists within a given effect range, when the event occurrence determination section determines that the effect event has occurred, the effect range being set based on an occurrence position of the effect event; an effect position processing section which positions at least the effect object positioned outside a field of view of the virtual camera or a dummy effect object provided in advance within the field of view of the virtual camera, when the event occurrence determination section determines that the virtual camera or the player's character exists within the effect range; and an image generation section which generates an image viewed from the virtual camera in an object space.