It is a first-person shooter game developed by Guerrilla Games, released as a launch title for the PS4. The game is set 30 years after the events of Killzone 3, featuring a cold war scenario between two rival factions, the Helghast and the Vektans, separated by a wall. Players take on the role of Lucas Kellan, an elite soldier known as a Shadow Marshal, tasked with maintaining a fragile peace. The game features more open-ended level design compared to previous linear installments, allowing for multiple approaches to objectives, including stealth.