This Means War! is a post-apocalyptic real-time strategy game where players command UN forces in a world devastated by a virus that destroyed most computer technology. As the UN's primary strategist, you manage resources and armies while battling over remaining technological assets across the wasteland. The campaign features diverse adversaries including a religious extremist, an Australian survivalist, and an aristocratic opponent, each presenting unique strategic challenges as you fight to control the scarce technology and territory in this dystopian setting.