They told me I shouldn't say this, but you know what? Here it is: Halo is THE BEST first person shooter, this goes for campaign, multiplayer, co-op, you name it. The only fps game I'd put close is Half Life 2 but even that barely lives up to the masterpiece that is Halo. I'm going to cross all boundaries here and say it MIGHT just be THE BEST game period. Just keeping it one hundred.