To play on different devices with the same OS, you need to log in with the same Google Play account from both devices.

Here is how you can do it:

- open the game;

- tap the gear button in the upper right-hand corner of the screen;

- go to the Community tab;

- sign in with your Google Play account.

If you can't sign in, contact us via Gear button right in the game and we will help :)