A game processing server apparatus providing a game service to a plurality of terminal devices connected with each other via a network, includes a game data generation unit that generates game data in the game service; a player information storing unit that stores player information including registration date data indicating a date when the player operating the terminal device is registered in the game service; and a group allocation unit that determines a player group to which the player belongs based on the registration date data of the player, wherein the game data generation unit generates game data for training, which is different from normal game data, to the player who belongs to the player group.