A Steam CD-Key is a single-use code that lets you add a game to your Steam library. You enter the code on the product activation screen in the Steam client; the game is then linked to your account and can be installed on any computer you like from that point on.
Delivery is digital. As soon as your payment is confirmed, the key appears in the orders section of your account, no waiting required. Keys work without any region restriction; they activate without any issue on Steam accounts registered in Turkey, and activation still works even if your account's country is different.
A key can only be used once and becomes permanently linked to the account it is redeemed on. So make sure you are logged into the correct Steam account before entering the code; an activated key cannot be transferred to another account.
1. Once your order is confirmed, your key appears in the orders section of your account.
2. Open the Steam client and click the Add a Game link in the bottom left corner.
3. Select Activate a Product on Steam and accept the terms of use.
4. Enter the key that was sent to you. The game is added to your library and the download starts.
The key is single-use and becomes permanently linked to the account it is entered on. Do not share your code with anyone.