Killzone HD hits October 23 - GameSpot

Sony offering Guerrilla's 2004 shooter as $15 stand-alone download on PlayStation Network next month; game boasts 720p graphics at 30fps with trophies.
The Killzone Trilogy is a compilation pack that includes the original Killzone, Killzone 2, and Killzone 3, as well as all the multiplayer packs for Killzone 2 and Killzone 3.

Killzone: Shadow Fall Review - GameSpot

The Making of Orbitron: Revolution

Grandia HD Collection Not on PS4 Because it Doesn't Support 4K

Sony Sued Because Killzone: Shadow Fall's 1080p Graphics Aren't Totally 1080p - GameSpot

Killzone - GameSpot

News - July, 2013

Killzone 3 - Wikipedia

Halo: Combat Evolved, Ultimate Pop Culture Wiki

Sonic Unleashed, Sonic Wiki Zone

Why Killzone: Shadow Fall is Almost 40GB

Killzone 2 E3 2005 Preshow Report - GameSpot

Killzone 3 Review - GameSpot

Killzone 2 Review - GameSpot

Killzone 3 Review - GameSpot

Killzone 2 - Wikipedia