If you've just downloaded the game or you were logged out, you first need to progress through the game tutorial to the point where you can access the main menu. Then go to the Account section > "Log in."
On the starting screen, select the "Login" option.
Select whichever login method you used before:
For an email address, enter your credentials or use a one-time password to log in to the account.
For a Facebook profile, enter your Facebook profile credentials or choose the profile you used before.
For a Google account, enter your Google profile credentials or choose the profile you used before.
For Google Play, select one of the Play Games profiles that are currently logged in on your device and click Continue.
If you used to play on an iOS device with Apple Game Center, you'll need to link it to another available login method first (email address, Facebook profile, or Google profile). Find out how to do so here:
If you've been using a guest account, you'll need to link it to one of the available login methods. Find out how to do so here:
- How do I link my account to an email address or unlink it?
- How do I link my account to a social network?
After that, you will be able to log in to your account on any device.