The main antagonist was originally Helghast Autarch Scolar Visari his death in Killzone 2 brought about the rise of two new antagonists and the hopeful heirs to Visari's throne in Killzone 3: Jorhan Stahl and Admiral Orlock. Tomas 'Sev' Sevchenko ( Killzone 2 and Killzone 3), mercenary Arran Danner ( Killzone: Mercenary), and Shadow Marshal Lucas Kellan ( Killzone: Shadow Fall). Jan Templar ( Killzone and Killzone: Liberation), Sgt. The series has featured four main protagonists: Cpt/Col. The Killzone series follows the continuous war between the ISA and Helghast taking place on both ISA Earth colonies and the planet Helghan, the home planet of the Helghast. The series is set in the 24th century, showing the galactic war between the Interplanetary Strategic Alliance (ISA) and the Helghan Empire. 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. 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 consists of six games, beginning on the PlayStation 2 in November 2004 with Killzone, and continued on the PlayStation Portable in October 2006 with Killzone: Liberation. The main series and the PlayStation Portable (PSP) installment were developed by Guerrilla Games, a subsidiary of SIE, and the PlayStation Vita installment was developed by Guerrilla Cambridge. Killzone is a series of first-person shooter video games for Sony Interactive Entertainment's (SIE) video game consoles.

Download free killzone shadow fall