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As the title says I cant seem to find any information about this , it does have a notice saying it requires 3rd party software but it doesn't say what.

The other reason I ask is because MW2 always required steam and there was no alternative and I dont want to buy it from steam again.

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up vote 6 down vote accepted

It does require Steam. The game doesn't run without it, even the retail version requires Steam.

How do I know? I bought it from Direct2Drive.

You can even enter the serial number you get from D2D into Steam ("Add A Game...") to get around the D2D download manager.

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Thanks I am now quite sad – RC1140 Dec 8 '10 at 9:16

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