Killzone

Killzone is a first-person and third-person shooter series of videogames exclusively for Sony Computer Entertainment's (SCE) videogame consoles. The main series and the PlayStation Portable (PSP) installment were developed by Guerrilla Games, a subsidiary of SCE, and the PlayStation Vita installment was developed by Guerrilla Cambridge in the United Kingdom. Killzone currently consists of six games spanning over the PlayStation 2, PlayStation Portable, PlayStation 3, PlayStation Vita, and the PlayStation 4.

The series began on the PlayStation 2 in November 2004 with Killzone, and continued on the PlayStation Portable in October 2006 with Killzone: Liberation. Killzone 2 was released for the PlayStation 3 in February 2009, and Killzone 3 was released in February 2011, also for the PlayStation 3. Killzone: Mercenary was released for the PlayStation Vita in September 2013, followed by Killzone Shadow Fall, a launch title for the PlayStation 4, in November 2013.