Killzone: Liberation first came out on October 31, 2006 for PlayStation Portable. It’s a third-person shooter game developed by Guerrilla Games and published by Sony Computer Entertainment. The player controls Templar, a soldier in the Interplanetary Strategic Alliance, rescuing hostages and gather intelligence on the Helghast.

The game is the predecessor to the original Killzone game, taking place two months after the events of the first game.