Armored Core 4

The story takes place in an alternate universe where corporations have taken over governmental control. The rise of population growth led to food and energy shortages, widening the gap between the rich and the poor. Anarchy ensued, and the government lost control. People turned to corporations for safety, leading to six major corporations vying for power in a full-scale war known as the Nation Dismantlement War.

Five years after the establishment of Pax Economica, a new system guaranteeing food and safety through loyalty, the player joins the Ravens, a rebel group seeking to challenge modern slavery by force. The player controls a giant Mech, part of a squad, which can be assembled with available parts, customized with weapons, paint, and aesthetic options.

The gameplay involves fighting Mechs from corporations in 30 missions grouped into chapters across various locations worldwide. Each level concludes with new parts becoming available for the Mech's repair, using wages earned. Multiplayer is supported through PlayStation Network and Xbox Live.