Disclosed is an online tournament game system including a game providing module configured to provide a game for a plurality of players that join a virtual game room during a predetermined game session, a first ranking determination module configured to compute a point value balance of each player based on result of game play committed by the players and to determine rankings of the players based upon the point value balance of each of the players during the first time period, and a player selection module configured to select and assign players for the second time period based upon the rankings of the players during the first time period. The predetermined game session includes a first time period and a second time period in a sequence. Each of the players either gains or loses a point value depending on result of their game play.
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