多人在线战斗竞技场游戏（MOBA，multiplayer online battle arena）又称作动作即时战略游戏（ARTS，action real-time strategy），源自即时战略游戏（RTS）。玩家被分为两队，通常每个玩家只能控制其中一队中的一名角色，以打垮对方队伍的阵地建筑为胜利条件。

但有些多人在线战斗竞技场游戏1个玩家可以控制2至3名角色，或2位玩家控制1名角色，例如《暴雪英霸》中的失落的维京人、雷克萨与丘加利。

Multiplayer online battle arena (MOBA), also known as action real-time strategy (ARTS), originated as a subgenre of the real-time strategy (RTS) genre of video games, in which a player controls a single character in one of two teams. The objective is to destroy the opposing team's main structure with the assistance of periodically spawned computer-controlled units that march forward along set paths. Player characters typically have various abilities and advantages that improve over the course of a game and that contribute to a team's overall strategy. A fusion of action games and real-time strategy games, players usually do not construct either buildings or units.