ESRB:T - Teen (Titles rated "Teen (T)" may be suitable for ages 13 and older, and may contain violent content, mild, or strong language, and/or suggestive themes.)
Game Description:Break through the "silent line"! From the ashes of the machine world humans have returned to the surface of Planet Earth to rebuild civilization. But explorers discover a hidden mega-city protected by incredibly powerful machines, so powerful that the city is surrounded by a "silent line" of defense. It's time again for the heroic mercenaries known as the Ravens to take their human-controlled machines or 'mechs' to the task. Customize your Armored Core unit and take advantage of a new cockpit view and Target Weapon system. A host of new customizable A.C. units and the ability to import A.C. units from Armored Core 3 will further excite Armored Core fans. Play with friends in a new and improved 4-player mode.