A blend of action RPG and RTS elements, METAL GEAR SOLID: PEACE WALKER features a gripping story that unfolds through the artwork of Yoji Shinkawa and acclaimed comic book artist, Ashley Wood. The game introduces new AI Weapons – giant unmanned behemoths that Snake must overcome to complete his mission - including airborne, tank, and mobile-fortress-style enemies that can each talk and sing during battle using VOCALOID technology.
Additionally, METAL GEAR SOLID: PEACE WALKER boasts extensive multi-player elements including four-player CO-OPS (COoperative-OPerationS), and a stunning three-against-three battle, wherein six players can form teams and engage in thrilling linked battles via the Sony handheld's Ad Hoc capabilities that extend the gameplay experience allowing players to administer medical help to colleagues, share munitions, and provide defense for each other using the Snake formation to cover blind spots.