If I buy Deus Ex from Amazon will I be able to add it to my steam account.?

If I buy Deus Ex from Amazon will I be able to download it from steam using the "activate a product on steam" option? would steam then download the updates for me, and would I get steam achievements?If I buy Deus Ex from Amazon will I be able to add it to my steam account.?
Deus Ex Human Revolution is a Steamworks title, so every copy registers with Steam. You actually can't play it *without* Steam.If I buy Deus Ex from Amazon will I be able to add it to my steam account.?
deus ex has steam every where retail [ buy in store]



amazon any website that sells games [ all have steam ]



no where in the world deus ex has not got steamIf I buy Deus Ex from Amazon will I be able to add it to my steam account.?
No, you can only add it as a non-Steam game.

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