Abstract: A method for performing an online multilevel tournament duel game between players. The method includes the step of checking whether a player has bought a preset function, wherein the preset function enables the player to preset a plurality of game policies into a network game server and enter the duel game with the plurality of game policies. If yes, an account of the player logins the duel game automatically. Then, it is checked if an opponent player is available on a lowest game level. If with the preset function, one of three duel symbols is automatically selected with one of the plurality of game policies within the preset timeframe. The method further includes the step of comparing the selected duel symbols of the players when the preset timeframe has passed to determine a duel match winner.