Armored Core 4 is a mech combat game, developed by Sega for the Xbox 360 and PlayStation 3 consoles. It is the 12th installment of From Software's Armored Core series, despite being titled Armored Core 4; the game is set in the future where a great war has left the nations of Earth devastated and their respective governments taken over by corporations. Source: Wikipedia, "Armored Core 4", available under the CC-BY-SA License.