Progress is saved locally to your device or online to your linked Facebook, Google, or Apple ID. To link progress to one of these accounts, head to the Settings tab and find Link Account. Tap on the Sign In button to log in and link your game. You can sign in and out of Linked accounts in this area.

Please be advised: Prior to April 23, 2020, game data could not be saved to Google or Apple accounts. Before the release of v2.7.0, Google logins were only used as a feature to track achievements and purchase from the Store.