In order to activate a Blizzard game key, an account on Battle.net is needed. If you already have an account please follow the steps below:
- First, claim the purchased product on your Kinguin account.
- Go to Blizzard and sign into your account.
- Click your email address from the upper right corner.
- Select “Account Settings”.
- On the left site select “Account Overview”.
- Then, paste your key into the “Redeem Code Window”.
- Click “Redeem Code” to finish the key activation process.