Softpedia writes: "Is this the PlayStation 3 shooter to get? When the original Killzone was released, everyone, including Sony, called it a "Halo killer." When the game was launched for the PlayStation 2, it received mixed reviews. It was certainly a good first person shooter that put the players in the combat boots of a series of International Strategic Alliance soldiers as they battled the Helghast, an offshoot of humanity who hated their cousins, on a distant planet. The game received a sequel on the PlayStation Portable, called Liberation, and fans and PlayStation 3 players are getting ready to welcome the release of Killzone 2."