Armored Core: For Answer

Ten years after the events of the the National Dismantlement War chronicled in Armored Core 4, the Earth is a highly polluted wasteland. In order to lift the population above the pollution, the Pax Economica league of corporations put together The Cradle System - a series of floating habitats capable of sustaining 20 million civilians each at a height of 7,000 metres above the planet's surface. However, the pilots of the Armored Core NEXT weapons platforms and their Lynx pilots were left behind on the ground along with almost half of humanity. Those on the ground have formed into several factions with the NEXT pilots mostly working for Collared, an organisation completely under the control of the League.

You play a Lynx who has to choose to fight for the League or to rebel and support one of the other factions. While taking part in missions to achieve this task, you can form partnerships with other players and fight together in co-op mode. Amongst other new features are destructible environments that are sure to spice up combat by making sure you don't stay in one place for too long. However the biggest addition to the game are the immense Arms Forts. These are massive mobile super weapons originally manufactured by the League and taking thousands of soldiers to operate.