The objective of this invention is to provide a game system and program that enable a greater variety of replay images, removing any monotony from such replay images. If an enemy object (16) is "locked-on" during a game, virtual camera change data is stored as replay data and virtual cameras for replay CA to CE are changed to a virtual camera CP pointing towards the enemy object (16) from the player object (10) or a virtual camera CQ disposed in close proximity to the enemy object (16). When an action occurs between first and second objects (or when such an action becomes possible), or when it is determined that first and second objects are in a given positional relationship, based on position data, the virtual camera for replay changes. The system determines a packet necessary for the replay processing of the current frame (a packet comprising virtual camera change data), and stores it as replay data. After a virtual camera has changed, further changes in the virtual camera are prohibited until a given period of time has elapsed.