Killzone 2 is a first-person shooter for the PlayStation 3, developed by Guerrilla Games and published by Sony Computer Entertainment. Players are members of an elite military unit whose mission is to quell an intergalactic threat and disarm a stockpile of seized nuclear weapons. Combat is frequent and fast-paced, as players use a variety of firearms (rifles, machine guns, and shotguns) and explosives (grenades and rocket launcher) to kill enemy soldiers. Red blood spray emits from enemy soldiers when shot, and weapons such as sniper rifles and shotguns can be used to decapitate them. Post-mortem damage can be inflicted on soldiers' bodies, resulting in pools of blood on the ground.