Make sure to save in-game progress with Google Play!
Please note that Google Play only supports one game per account! If others would like to start a new game on your device, they must save it to a separate Google Play account. Warning: using the same Google Play for more than one account will result in lost progress!
To connect your game to Google Play, follow these steps:
Open the Google Play app on your device
Open the game, and enter the in-game settings
Press the Google Play sign in button to connect your game to Google Play.