How to Activate Your Game on Battle.net

Activating a product on Battle.net : Once you have purchased your game and you have your CD key, you will have to visit Battle.net page to activate your game. If you don't have a Battle.net account you will have to create one. Once you log in, you will have to navigate through the website to activate your CD key, download, and install your game.

1. Simply click on the "Shop" tab on the upper right menu and once there select the "Services" tab and "Redeem a Code" in the menu. 
2. Introduce your CD key here to activate your product and follow the instructions to download and install it.

Battle.net uses a desktop application that allows you to manage your games easily. You will be prompted to download and install it to proceed with your game installation. It´s similar to other digital distribution platform's apps, offering services like a chat, a friend list, a news sections or a shop. As usual, you can also use it to download, install and uninstall your games any number of times. It was originally dedicated exclusively to Blizzard franchises, mainly World of Warcraft, Heroes of the Storm, Hearthstone, Starcraft, Diablo and Overwatch, but it recently has also started including some Activision titles like Destiny 2 or Call of Duty: Black Ops 4. It's worth noticing that you don't need to have the app running on your background all the time while playing since it's possible to shut it down once you have started your game.