The year is 2029 and the Global Corporate Wars have begun! "Warmonger" is set against an apocalyptic setting, when two of the largest military spenders, PolyChem Oil and General Energy, clashed in a dispute over a large cache of Iranian oil fields. When the conflict escalated, an all-out war took shape on US soil. The game is staged for players to take down an entire city; one block at a time. As maps are won, a larger tactical influence is then triggered in the next, or surrounding, map(s). Each map instance will play differently as the sheer destruction of map elements forces players to adapt and find new ways to win or defend their objectives. Every round leads you closer to dominating the web of maps that make up the entire city and players have the ability to raise their ranking in a class, gaining extra abilities for high performance. "Operation: Downtown Destruction" is part of a longer series involving distinct periods from the episodic "Warmonger" story.

Unique to "Warmonger" is a destruction system that allows dynamic gameplay to emerge from the results of combat, where every aspect of the environment can be completely leveled. Destruction is done procedurally, rather than pre-canned animations that are found in most games today. As a result, explosives, rockets, indirect fire, and vehicle combat can literally blow away walls, drop ceilings and open up new pathways for enhanced gameflow. Collision detection has also been carefully considered during development, and the effect of destruction within the environment can be used as a weapon. A sniper can blow the stairs behind him to block access, but a rocket to the floor beneath him will drop him down, causing possible death.