Call of Duty Black Ops is one of the best Call of Duty games. The singeplayer isn't that great but, there is worse in the video game history. The multiplayer as always is what makes this game as good as it is. In MW2 unlocking gear was based on rank but, in this game the equipment is bought via a credit  system so if you don't want somthing you don't have to get it. This is a change for the better. Zombies mode returns from World at War and is just as good if not better. The DLCs are a big money suck. $15 each is a big price and when the 4th comes out you'll have bought the game twice.