Not played in years! no longer needed. see the AI blurb below if you dont know what its about. Killzone Mercenary is a 2013 video game for the Sony PlayStation Vita. Developed by Sony, it belongs to the shooter and role-playing genres with a PEGI 18 rating. The game features multiplayer and online playability, as well as a unique sub-genre of boxing within the Killzone series. This graded game includes the manual and offers an immersive experience for fans of action-packed gameplay on the handheld console.