A game device includes a player's character controller operative to control the movement of a player's character on a map, a non-player character controller operative to cause, of those non-player characters located on the map, non-player characters located within a predetermined range from the position of the player's character to join a procession following the player's character, and to move the non-player characters belonging to the procession to the position previously occupied by the player's character to allow the non-player characters to follow the player's character, and a procession controller operative to increase, upon receipt of a predetermined control input, the speed at which the non-player characters belonging to the procession to move to the position previously occupied by the player's character and to gather the non-player characters near the player's character.