Warmonger is set in an apocalyptic future during full-scale corporate war within the cities of the US. These once-proud metros have been host to combat operations that have left them abandoned and practically razed. Players play as mercenaries in this war, though there is no storyline to the gameplay.
There are two game modes: "Capture and Hold", where teams vie for control points; and a standard "Team Deathmatch". There are 5 multiplayer maps and a training map.