Metal Gear Solid 4: Guns of the Patriots is a 2008 stealth game developed by Kojima Productions and published by Konami for the PlayStation 3. It is the sixth Metal Gear game directed by Hideo Kojima. Set five years after the events of Metal Gear Solid 2: Sons of Liberty, the story centers around a prematurely aged Solid Snake, now known as Old Snake, as he goes on one last mission to assassinate his nemesis Liquid Snake, who now inhabits the body of his former henchman Revolver Ocelot under the guise of Liquid Ocelot, before he takes control of the Sons of the Patriots, an A.I. system that controls the activities of PMCs worldwide. It was released worldwide on June 12, 2008. Guns of the Patriots received universal acclaim, with praise for its gameplay, graphics, story, characters, and emotional weight, while criticism centered on its plot as convoluted and the emphasis on cutscenes. The game garnered Game of the Year awards from several major gaming publications. It is considered one of the most significant titles for the seventh generation of video game consoles, as its release caused a boost in sales of the PlayStation 3, and had sold six million copies worldwide by 2014. Gameplay In Guns of Patriots, players assume the role of an aged Solid Snake (colloquially referred to as Old Snake), using stealth, close quarters combat, and traditional Metal Gear combat. The overhead third-person view camera of earlier games has been replaced by a streamlined view and over-the-shoulder camera for aiming a weapon, with an optional first-person view like a first-person shooter at the toggle of a button. A further addition to gameplay mechanics is the Psyche Meter. Psyche is decreased by non-lethal attacks and is influenced by battlefield psychology. Stressors (including temperature extremes, foul smells, and being hunted by the enemy) increase Snake's stress gauge, eventually depleting his Psyche. Adverse effects include difficulty in aiming, more frequent back pain and the possibility of Snake passing out upon receiving damage. If Snake kills too many enemies in a short amount of time, he will have a vision of Liquid and vomit, greatly reducing his Psyche. Among the available methods of restoring Psyche are eating, drinking, smoking, and reading an adult magazine. Snake has a few gadgets to aid him in battle. The OctoCamo suit mimics the appearance and texture of any surface in a similar fashion to