By using Google+, Game Center or Facebook, you can easily transfer your existing game to any new device. Please note that Facebook (or Google+) only supports binding one game account, so you will need to prepare a different Facebook (or Google+) account for each new game account.

Firstly, you need to make sure your existing game is properly saved to your Facebook (or Google+) account on your old device. Secondly, make sure you are logged into the same  Facebook (or Google+) account on your new device. Finally, download our game from the Play Store and install it on your new device. Then open the game on your new device, click on your character image and go into the Settings -> Account, and choose the "Facebook Bind" (or "Google+ Bind") button to load your original game progress.