Killzone 3 is a 2011 video game for the , developed by and published by . It is the fourth installment in the , the first game in the series to be presented in , and the first to include motion controls using the . It is a direct sequel to . It was released worldwide in February 2011 to positive reviews.In the climax of Killzone 2, Emperor Scolar Visari is assassinated by ISA forces, triggering a full-scale attack by the Helghan First Army. Overwhelmed, ISA commanders order a full withdrawal, leaving thousands of their own soldiers to die on Helghan. With the Helghast now driven to seek revenge for Visari's death, the survivors must join forces to find a way home.After failing to save Visari's life, Sgt. Tomas Sevchenko and Rico Velasquez regroup with Captain Jason Narville outside the imperial palace. With Helghan cruisers preparing to attack their fleet, they are forced to fight their way through the ruins of Pyrrhus, sacrificing most of their remaining armor and manpower in order to reach an near the edge of the city. Admiral Orlock, commander of the First Army, is pressured by Jorhan Stahl, the chairman of arms manufacturer Stahl Arms, to either ensure the total destruction of the ISA or turn over control of the army to him. Meanwhile, Rico receives a transmission from Jammer, a sniper whose platoon has been cut off by the Helghast. Against Narville's orders, he goes to assist them. The rest of the force attempts to link up with the fleet, but enemy interference leads to several ships being shot down, forcing the remainder to leave without Narville's men.