Even after 3 years since its release I find Killzone enjoyable to play.

User Rating: 7.5 | Killzone PS2
Killzone could have been so much better, instead it was a basic FPS game that gave PS2 users something to play Online. However, I know Gaming Communities that have been built around Killzone and still play the game regularly. Tournaments are being setup now and again, it seems that true Online Gamers can't seem to put Killzone to rest.

Maybe we will have to wait to see what Killzone 2 offers, hopefully something like:

Improved Offline Story
Customisation of Weapons/Clothing Offline and Online
Extended Clan/Game/Online features, Game being Types and Sizes
Vehicles, not Helicopters though

Can't wait for Killzone 2, if it delivers it will probably be set as one of the best games made, considering how well Killzone has done even though it lacked in areas and could have been perfected more.