Patent ID: 8147304

Claim:
A non-transitory computer-readable storage medium having stored thereon a game program executed by a computer system of a game apparatus for executing a game in which a target object is shot in a virtual three-dimensional space in accordance with an input from an input device, the computer system including one or more computer processors and the game program causing the computer system to execute: receiving an input of an instruction for shooting; shooting a moving object and moving the moving object in the virtual three-dimensional space; changing at least one of a size, a shape, or a number of a contact determination area of the moving object, by using a variable changing in accordance with the movement of the moving object; determining whether the contact determination area of the moving object contacts a contact determination area of the target object; and performing a predetermined game process when it is determined that the contact determination area of the moving object contacts the contact determination area of the target object.