You'll receive twice the rewards during the Invite Friends Mania event! Just share your invite link with your friends and make sure they use it to both download and install the game. This way, you'll make progress towards earning rewards.

Please remember that rewards are only given if the invited friend is brand new to the game, downloads it through your link, and links their Facebook accounts.

Please note that you can invite up to 50 friends only. Once you reach this limit, the invite option will be disabled and appear greyed out.