In order to enable a user to play a game continuously and to facilitate acquisition of valuable data by the user, the present invention provides a network game server device 1 that conducts a game in which a user is enabled to acquire valuable data having a prescribed value while performing transmission/reception of data with a terminal device employed by the user through a network 2 enables the user to play a single game of a plurality of games; awards prescribed points to this user in accordance with the results of the game played by the user; and provides to this user valuable data having a prescribed value in accordance with the points awarded to the user.