Buy a game in amazon and active (add this game) with STEAM ?
Does any know how to active a game that I bought with other reseller (like amazon, etc...) in STEAM? Can you send me a link to list of game that steam support to do that? Any other pro and cons for that action? I want to ask since in amazon, there's alot better deal. But I want to put all my games in one place (for now, it's STEAM).