1. Go to the settings menu by tapping the cogwheel icon on the upper right.
2. Select one of the available options and proceed with the log-in process.
3. Android users can choose to log in with Facebook or Google Play accounts.
4. iOS users can choose to log in with Facebook or Game Center. If you log-in with one of the available options above, you can safely protect your account and reconnect your account with the game at any time.