A system (20) comprises a gaming server (22) configured to host a turn of a zero-sum game played by a plurality of players via a plurality of websites (23a, 23b), each of the websites having a respective clearing account (38); and an application server (32). The application server (32) receives from the gaming server (22) information indicating for each player during the game (i) the wagering activity (ii) any winnings, and (iii) the website used to play the game. The application server (32) determines for each player a respective player value contribution based on the wagering activity of the player during the turn and a respective player value indicator associated with the player, and determines a total player value contribution based on the player value contributions of all of the players who played during the turn. The application server (32) determines for each player a respective rake allocation based on the player value contribution of the player and the total player contribution, and credits each website's clearing account (38) based on the respective rake allocation of each player who used the website to play the game during the turn.