@ OP
CoD 4 i think is a great single player game. The aiming system makes it much more difficult of a FPS, but its a staple of the series. Personally, i love it, mainly because realistically, when in an actual fire fight, your looking down the sights, not shooting from the hip. Its to add a level of realism to the game, which i love. Thought ill admit it can be a pain in the ass when doing room clearing, but i still love the system.







