Killzone has only ever been a third-person shooter game.
 The games were developed by Guerrilla Games, except for Killzone: Mercenary, which was developed by Guerrilla Games' sister studio, Guerrilla Cambridge, and published by Sony
=== Soundtrack ===The score to Killzone 2 was composed by Joris de Man, who scored 60 minutes of in-game music and 30-minutes of live orchestral score for the game, recorded at Abbey Road Studios in London, with the Nimrod Studio Orchestra

