Metal Gear Solid 4: Guns of the Patriots is a 2008 action-adventure 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. The game was released on June 12, 2008. After over 18 years of being exclusive to the PlayStation 3, Metal Gear Solid 4: Guns of the Patriots will be ported to Nintendo Switch, Nintendo Switch 2, PlayStation 5, Windows, and Xbox Series X/S on August 27, 2026, and will additionally be part of the Metal Gear Solid: Master Collection Vol. 2 compilation on these platforms. However, Metal Gear Online will not be included in the ports.