NETWORK GAME SYSTEM, A NETWORK GAME SERVER, A NETWORK GAME CLIENT, A PLAYER SELECTION PROGRAM, A MEDIUM STORING A PLAYER SELECTION PROGRAM, AND A MEDIUM STORING A PLAYER INFORMATION COLLECTION PROGRAM

An object of the present invention is to relieve users of efforts to select play partners by themselves. Upon receipt of a game request, a game request response unit returns player request issuance timing information specifying time to issue a player request. A player selection processing unit determines combinations of games at a predetermined timing. Upon receipt of a player request, a player request response unit extracts information about opposing players of a user issuing the player request from a user information storage unit and returns it to a client as a response to the player request. A game request unit of the client outputs a game request to a server and receives player request issuance timing information from the server. When the time specified in the player request issuance timing information is reached, a player request unit outputs a player request to the server and receives information about play partners from the server.