Abstract: A system for a-synchronous multi-player network-based and turn-based gaming, the system comprising: a client associated with a processing unit and being configured to communicate over a network with a gaming server and receive a tournament invitation and at least one game move notification therefrom; the client is further configured to receive participation authorization indication from a player and instruct the processing unit to perform at least the following: send the participation authorization to the gaming server; receive at least one game move instruction from a player within a time interval parameter defining a time-window during which said player has to make a game move in his turn; and send the game move instruction to the gaming server if the time interval is met.