1. An information storage medium storing a program that generates an image of a virtual space viewed from a virtual camera, an operation object and a non-operation object being disposed in the virtual space, the program causing a computer to function as: an operation object movement control section that receives a movement instruction input about the operation object, and controls a movement of the operation object in the virtual space based on the received movement instruction input; a non-operation object movement/motion control section that controls at least one of a movement and a motion of the non-operation object in the virtual space based on a predetermined algorithm; an attack target setting section that determines whether or not an attack target tracking condition is satisfied by at least one of the operation object and the non-operation object, and sets the non-operation object to an attack target tracking state in which the non-operation object tracks the operation object as an attack target when it is determined that the attack target tracking condition is satisfied; a display control section that displays an attack target tracking notification image that indicates that the non-operation object is set to the attack target tracking state when the non-operation object is set to the attack target tracking state; and an image generation section that generates an image of the virtual space viewed from the virtual camera, the operation object being disposed in the virtual space, wherein the display control section displays an attack target tracking notification image in the virtual space between the non-operation object and the operation object within a main game image, and the image generation section that generates an attack target tracking notification image is disposed in the virtual space as an object in the same manner as the operation object and the non-operation object.