COD Black Ops!

[Swash]

I agree with Witch Doctor, the FPS genre is so broad and always expanding. I nevered played Killzone myself, but watched it being played and it's pretty good. I've never played MAG, but I heard a lot about it and read the reviews and although it has a large about of players in a match people have said it's extremely laggy even with Sony's superior servers. Halo in my opinion basically invented the FPS genre and continues to revamp it and improve it.