Board Thread:Questions and Answers/@comment-82.132.233.188-20141231030406/@comment-25746267-20141231231850

On the title page of Battle Cats there should be an icon in the bottom right corner that says 'invite friends'. There is a link from there where you can input an invite code, but I believe you can only do it once. Otherwise people would spam codes and get prizes. You can use mine if you don't have anyone else's to add. It's sggbq.