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 first Killzone on the ESRB, Game Informer has confirmed with Sony that the 2004 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.
For years, the success of planetary colonization has resulted in several planets to become inhabited by humans. While the majority of colonies have aligned to form the ISA, the Helghast, a ruthless, militaristic separatist faction have distanced themselves secretly planning to scale an all out war. Killzone takes place during the initial Helghast blitzkrieg of the nearby colony of Vecta. As Vecta City's orbital defenses mysteriously fail, the Helghast have been able to land and deploy their troops rapidly and with ease. As the planetary defense forces become overrun and scattered into the city, the initial objective as an ISA member is to escort a high-ranking official to an evacuation point.