An online action game service method and a weapon usage and application method for playing a first-person and third-person type battle game of kids are provided to enable teenagers to experience play culture which is disappearing and adults to recall the memory of having played battle games in childhood, through online battle action games for kids. Plural users connect to a kid battle play action game(S201). The plural users pass through user login processes such as general member registration and authentication(S202). A game room for executing the game is opened or the users participate in an established game room(S203). Members of each team are constituted in the established room(S204). A tactic form to be developed is determined and selected by a representative(boss of youngsters of the neighborhood, president, first-com first-serviced, random ways, etc.) of the room or by majority(S205). An actual battle action game is progressed according to a set situation(S206). Win/loss results of the game are shown to gamers, and the results are stored in a game DB(S208). It is decided whether to continue the game in the current room.
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