Killzone 2 is a first-person shooter (FPS) for the PlayStation 3, developed by Guerrilla Games and published by Sony Computer Entertainment. It is the third installment in the Killzone franchise that began on the PlayStation 2 with Killzone and continued on the PlayStation Portable with Killzone: Liberation. The game was first announced at E3 2005, with a tech demo on display, while the first gameplay footage was shown two years later at E3 2007. Killzone 2 was released worldwide late February 2009.