im addicted to COD3 multiplayer. the game itself online is awesome...i already beat it and am trying to go through it on veteran to unlock the achievement...but its pretty brutal.
easy to lose a few hours or more in one sitting in online multiplayer. there are a variety of different games/matches...and ranked and unranked games.
the only thing that i dont like about the game is a lot of the time trying to join a game online. there are times you cant even get in one even if it shows empty slots. i think they are having some glitches. once you get in, its money in the bank....its just getting in that sucks.
in fact, i got call of duty..gears of war, and need for speed carbon all at the same time, and i dont even play the other two....thats how fun it is