Killzone: Liberation

This game features a top-down isometric view in contrast to the original Killzone for the PlayStation 2 (PS2), which is a first-person shooter. The resultant game can be seen as a mixture of a shooter and a dungeon crawler.

The player controls Jan Templar, who was the primary protagonist of the original game. He can board and control several vehicles: heavy machine gun turrets, a tank, a hovercraft, and a jetpack. During some levels, a 'buddy' can be ordered around (although some are unarmed). These 'buddies' are normally teammates (Rico and Luger) or people that have to be rescued (the three VIP's in the third mission of the first chapter and Evelyn in the third mission of the fourth chapter).

There are five chapters with 4 levels in which players eliminate the Helghast resistance (the fifth and final chapter was made available to download).

In Killzone: Liberation, two months after the events of Killzone, the Helghast have been dealt a hefty blow from the last game, but the war is far from over. The enemy still controls large parts of the planet Vekta, and though the ISA armies are fighting hard, they are losing ground. The rules of war have been cast aside with the sadistic Helghast General Armin Metrac, employed by the Helghast Emperor Scolar Visari to use brutal measures in order to seize the initiative after their past defeat and strengthen his position further. Metrac and his right-hand man, Colonel Cobar, are planning to capture three key figures of ISA, and their plan ends up successful.

The game received "generally favorable reviews" according to the review aggregation website Metacritic.

411Mania gave it a score of eight out of ten and called it "a game that provides a great deal of intense shooting action, with tough enemy opponents that don't lie down and die easily. While the challenge does mean you're going to die an awful lot, you won't have to backtrack much. Throw in an ad hoc competitive multiplayer component and co-op play for the whole campaign, and you've got a thoroughly excellent package." The Sydney Morning Herald gave it a similar score of four stars out of five and called it "A smart and challenging blend of action and strategy that is a welcome addition to the PSP's growing arsenal of titles."