The best shooter games like Killzone 2 are Killzone 3, Resistance: Fall of Man and Gears of War. Below are 9, each with the reason it is here — and, at the end, what filtering to shooter costs you.
Filtering to shooter means you want the guns to be the answer. It is the right filter when what you liked was the feedback — the sound, the recoil, the way enemies react.
What you get: Moment-to-moment feel, and the shortest distance between picking a game up and enjoying it.
What made Killzone 2 worth playing in the first place is covered on the full list. This page is the shooter part of that answer, and only the shooter part.
The sequel, lighter on its feet and more varied.
The other PlayStation shooter of that generation, with a stranger arsenal.
The same weight, from cover, and the genre's template.
The Xbox alternative if you want the sandbox rather than the recoil.
A campaign that still commits to being one, with far better pacing.
Heavy, grim shooting with genuinely good atmosphere.
The best-feeling large-scale shooting in the series.
The current heaviest third-person shooter, and built for this appetite.
The other shooter where every impact has physical consequence.
Variety. Shooters commit hard to one loop, and the ones that try to be something else usually do the something else badly.
The full list is on games like Killzone 2 — 9 picks, no genre filter.
Killzone 3. The sequel, lighter on its feet and more varied.
No. Killzone 2 released on the PlayStation 3, but a recommendation is only useful if you can play it, so the picks above span platforms and eras. What they share is the genre and the reason.
How the guns sound and how enemies react to being hit. A shooter with mediocre levels and superb weapon feedback is more fun than the reverse, every time.
Each pick says. Several of the best shooters ever made are single-player campaigns, and a few of the co-op ones are genuinely worse with bots.
By hand. Each pick was written for the full Killzone 2 list first, on what the game actually does, and this page is the part of that list that is shooter — never a genre tag lookup, which is how "best racing games like Super Mario 64" used to be a page on this site.
Or read the shooter guide for where to start in the genre generally.