Peace Walker is set in Costa Rica in 1974, and follows the exploits of returning protagonist Snake as he runs the mercenary unit Militaires Sans Frontières (Soldiers Without Borders).
It is the seventh Metal Gear game written, directed, and designed by Hideo Kojima, and the 5th installment of the Metal Gear Solid series, as well as the second action-based Metal Gear game made specifically for the PSP, following Metal Gear Solid: Portable Ops it was later released for the PlayStation 3 and Xbox 360 as part of the Metal Gear Solid HD Collection in North America and Europe and as a stand-alone retail release in Japan. Metal Gear Solid: Peace Walker is an action-adventure stealth video game developed by Kojima Productions and published by Konami for the PlayStation Portable (PSP) in 2010.
