KILLZONE PS2

The game is set in an era of space colonization where the Helghast Empire has recovered from its defeat in the First Helghan War and launched a blitzkrieg against the outer Interplanetary Strategic Alliance (I.S.A.) colony planet Vekta. Vekta's orbital Strategic Defense (S.D.) platforms failed during the initial assault, allowing the Helghast to land swarms of soldiers onto the surface and making it all the more difficult for the outnumbered I.S.A. forces.

In the game, the Helghast are a faction of human descendants who colonized the planet Helghan many generations ago. The planet's harsh environment forced the Helghast to adapt and mutate so much that they can no longer be considered human. They are stronger, faster and more resilient than their human cousins, and possess a burning hatred for humanity. Except for a small number of half-breed Helghast and trained troopers, they require a gas mask and air processing tank that creates air similar to that found on the planet Helghan.

The player takes control of I.S.A. Captain Jan Templar, fighting off the Helghast invasion. Templar and his squad are called back to the base for reassignment, and are promptly sent to find the I.S.A. operative Hakha and the key in his possession. During the course of the game, the player also takes control of several other characters, such as Shadow Marshal Luger (a female special operations assassin), a heavy weapons specialist Sergeant Rico Velasquez (a Helghast-hating soldier with an itchy trigger finger), and Colonel Hakha, a half-Helghast, half-Human spy.