Another shooter, Call of Duty 4 is backed up by a proprietary game engine of its own, incorporating a complex physics system for bullet behaviour as well as and some of the most technically accomplished visuals we've ever laid eyes on, with extremely clever use of effects like depth of field and dynamic HDR lighting which serve to make you forget on occasion that it is just a game.
Many materials (such as wood and plasterboard walls) can be shot straight through, with the engine calculating "Bullet Penetration" levels for every shot. Yes we know you could do it on the N64's GoldenEye, but it was not exactly this advanced. Add this to the destructive scenery (cars and buildings) and you have a dangerous, ever changing landscape where finding cover is not as simple as crouching behind the first object you see.
Best of all, the console versions run at one of the most consistent 60fps frame rates around. Great stuff.
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