A world ravaged by pollution has sent most of the population to live in the skies. A rebel faction refuses to leave the surface, setting the stage for a mech-powered showdown in this end-of-the-world Armored Core saga. As a mercenary, you'll choose among - and can switch between - three factions, creating hordes of battle scenarios and three endings for the war. Outfit your mech with over 400 customizable parts, including 130 new ones. Defeat new super-sized bosses by cutting to the core of massive mobile battle stations and destroying them from inside. Choose controls tailored to rookies or vets, join up in Co-op Mode, fight multiplayer battles online, and more.