The Battle.net is a social community of Blizzard Entertainment in which players from around the world meet to play the games developer. Nowadays it is possible to download the games directly from the site Blizzard and activate them with one (or key) code, acquired through online shopping or sweepstakes done by the company itself. Learn now to redeem a key on Battle.net.
Step 1: Enter the site Battle.net and log in to your account
Step 2: Click on "Account" in the upper right corner of the screen to access your account information.
Step 3: Click add key game.
Step 4: Enter the key code and click "Redeem Key".