If the PlayStation 3 marked your introduction to the Killzone series, it looks like you'll finally get a shot at trying the original. After spotting a listing for the firstKillzone on the ESRB, Game Informer has confirmed with Sony that the 2005 Helghast extermination simulator is indeed headed to PSN. The title will be a port of the original PlayStation 2 Killzone, so we wouldn't expect any extra bells or whistles.