Yes it is on a card kinda like the Microsoft point cards
Well you don't unlock them you buy the mappacks with Microsoft points
Yes, buy only for Nintendo DS call of duty black ops related link has details
you need to buy call of duty mw3 and you need to register for call of duty elite
You should buy either Call of Duty Black Ops, or Modern Warfare 1.
yes u can buy the 3 map packs either in a bundle with all of them or seperet but it cost Microsoft points.
You can't play Call of Duty on a website. You have to buy it.
you can buy it at gamestop
online
well 4 has better graphics and you should buy that
You start with 8 maps u need to beat the campaign to get more. and to get all of them buy em with 800 Microsoft points
You buy the PC game for Call of Duty World at War