The present invention provides a player with replay images without setting a reference value to the replay images. First, in a game implemented by a program of the present invention, a first event table that identifies event content and the importance level thereof, is set. Next, replay images of an event that occurred during the execution of the game are saved in the memory unit. Then, the first event table is referenced during execution of the game, and the importance level of the replay images saved in the memory unit is set. Next, a second event table used to identify the importance level of the replay images is set. Finally, at least either the latest replay images saved in the memory unit, or the replay images saved in the memory unit in accordance with the importance level of the replay image, or both, is displayed on a monitor.