A multiplayer game system (100) comprises a lobby server (3) and game machines (A1, A2, ..., B1, B2,...). On receiving an entry list request from a new entry game machine, if there is a preceding entry game machine form which the lobby server (3) has accepted an entry list request and which is waiting for a game the lobby server (3) specifies an opponent independently of the stage of the tournament game between the new entry game machine and the preceding entry game machine. Each game machine manages the stage of the tournament, progresses the game depending on the win/loss judgment result, instructs a display unit of the game machine to display an image corresponding to the stage of the tournament.