TIME.com: What happens to society when you run out of resources? That's the question lurking in the background of new post-apocalyptic first-person shooter Brink. On a massive floating city known as the Ark, two extremes of troubling human behavior come to the fore in view of the game's theme: perpetual conflict. The Security faction wants to lock down a draconian order to prolong survival while the Resistance tries to cause enough chaos to snatch the tools to escape and see if things might be better elsewhere. You can play as each and the choice of faction at the beginning of the single-player game feels charged, like the fate of civilization is at stake.