Killzone 2 is a 2009 first-person shooter developed by Guerrilla Games and published by Sony Computer Entertainment for the PlayStation 3. It is the second main installment in the Killzone series, following 2004's Killzone.

Similar to its predecessor, Killzone 2 takes place in the 24th century and chronicles the war between two human factions; the Vektans, and the Helghast. The game takes place two years after the events of Killzone and follows protagonist Tomas "Sev" Sevchenko as he and his unit battle the Helghast as the Vektans invade Helghan. The protagonist of Killzone and Killzone: Liberation, Cpt./Col. Jan Templar, returns in a supporting role, along with Rico Velasquez. Killzone 2 is played from a first-person view and allows the player to use a variety of weappons. It was released worldwide in February 2009.Killzone 2 was widely anticipated prior to its release. It was critically acclaimed by critics and fans, who praised it as a superior title to the original Killzone. Additional praise was given to the game's visuals, action, multiplayer modes, soundtrack and atmosphere, although criticism was directed at the narrative.