It only has online co-op.
There's no co-op in the Single Player Campaign but there is co-op in Specials Ops.
No only in Co-op
make your friend go to download play, 3DS, and then you guys can play CO-OP
yes u go to play multiplayer and then u go to co op then u press a then u play the lvl u want to
You can't play co-op in COD 3, unfortunately, World at War is the only COD with co-op campaign.
you can't.
It only has online co-op.
No, but it has offline bots.
no, it would not be as good.
No it won't work.
When you duel and only when you duel will it be co-op
The Wii version of the game does not allow you to play co-op online. How ever the game does allow the players to play a squad mate co-op mode during campaign which views both players through the same character.
Yes on xbox, ps3 and wii you can, but if you are talking about the PC im not to sure
No you can not unlock the zombie levels by playing co-op you can only do it by playing single player. Also if you play certain level in campaign you will unlock levels for zombies.
You cant its impossible. Maybe in COD 7 will have more players
2.50 from co-op =D