Abstract: Disclosed is a network game system having allocated game channels and network game method therefor. The network game system comprises a service provider to support a variety network games, and providing additional game information corresponding to the network game information; a broadcast station to allocate at least one or more game channels, and to transmit the additional game information corresponding to the network game information provided in real time from the service provider; and at least one or more digital broadcast receivers to receive the additional game information transmitted from the game channels, and to directly receive and transmit from and to the service provider substantial game play information corresponding to the network game information running based on the received additional game information.