Disclosed is a game program that makes a server device connected to a terminal device executing a game including a plurality of game contents with different difficulty levels through a communication network control progress of the game. The game program causes the server device to realize a determination function of, based on positional information of a real space of the terminal device acquired from the terminal device used by a user, determining establishment of a positional condition including that the terminal device is positioned or has been positioned in any of one or more predetermined areas, and a setting function of setting a game content with a difficulty level higher than a game content already set in an executable state in the terminal device or the user among the plurality of game contents in an executable state based on establishment of a release condition including the positional condition.