Armored Core: Last Raven

Armored Core: Last Raven is a mech combat game, the pilots are called Ravens, and is set about half a year after the events of Armored Core: Nexus. The three major corporations merged into the Alliance in order to rule the world - but a new faction, Vertex, challenges them. Smaller, independent gangs of Ravens called Warlords have grown more aggressive which does not help matters.