<p>The game system is provided with: a game machine (4) for executing an arcade game; user terminals (3) on which a mobile game that cooperates with the arcade game can be played; a central server (2); and a storage unit (23) that is for storing band playing data (53), which is provided so as to be owned jointly by a band configured from multiple users who play at least one of the games and is described in accordance with the playing details of the respective games. The band playing data (53) of a band that includes a user is updated in accordance with the playing details of the user playing a mobile game, and the arcade game played by users included in the band is controlled in accordance with the band playing data (53).</p>
