To easily provide a player with a solidarity sense with unknown players by facilitating interactions among player characters when a plurality of the player characters are arranged in a common game space.

Applications to attend a game developed in the common game space are accepted until a set time limit, and the number of the players who have applied to attend the game by the set time limit is counted (S201). The number of groups to be generated is determined on the basis of the number of the players who have applied to attend the game by the set time limit (S202). The players who have applied to attend the game by the set time limit are allotted to the groups of the determined number of groups to be generated (S203 and S204). According to the group to which each player character belongs, the game is directed on the player character.