Really unremarkable in most aspects. I only played it because I have some interest in the second Killzone, but wanted to see where the series started. What I liked is the general game feel, being on the PS2 a faster paced shooter akin to Quake or other PC shooters at the time probably wasn't the right decision, so they opted for a more slow paced grounded shooter, which I think they succeeded in. Your Character has a weight to it but isn't too sluggish to control, and the weapons are all well animated. The general art direction is good, with a sci-fi world, that still feels grounded, because of the influence of WW2 imagery. All the gadgets and vehicles you come across aren't flashy, it's mostly just heavy machinery with subtle advanced technology built in, and the weapons you fire are all still using bullets. The levels the game takes place in are also varied enough, so they don't get stale too quick, my favorite being the swamp and jungle sequences. But that doesn't really help the game from getting kinda boring. Although the shooting part feels alright, it doesn't evolve at all. It's just shooting the same enemies over and over again for about 8 to 9 hours. That's it, there are no special boss encounters or other things like vehicle sequences to break up the pace a bit. The squad you travel with aren't the most interesting characters, the evolving relationship between Rico and Hakha was a nice thought, but they could have done way more than they did. So what's left is an unfortunately really bland game, that probably has some potential, so it's interesting that it ignited a higher budget franchise on the PlayStation 3.