To propose an appropriate game to a user.

A game server 20 comprises: skill level determination reference storage means 23 for storing a determination reference for determining a skill level of a player corresponding to a game; play log acquisition means 212 for acquiring a play log related to a game that has been played by a user; skill level determination means 213 for determining a skill level of the user on the basis of the play log and the determination reference; user information storage means 22 for storing user information including skill level information associated with skill levels for respective games; and game recommendation means 214 for, according to a skill level of a first user who has played a first game and a skill level of a second user who is different from the first user, selecting a similar user who has a skill level similar to that of the first user from second users and specifies a second game that is different from the first game and has been played by the similar user so as to propose the second game to the first user.