Metal Gear Solid 4: Guns of the Patriots

The finale of the original saga finds Snake old before his time, his body failing, sent into a near future where private military companies run perpetual war for profit and every soldier is tracked by a system that controls who can fire a gun. He moves through war zones on five continents to end the man he has chased his whole life. It is dense, exhausted, and openly trying to tie off two decades of plot, sometimes through cutscenes that run as long as films. Under the noise it is about old soldiers asked to keep killing past the point of meaning, and a man given permission, finally, to stop.