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Account & saves
Accounts are optional. Even as a guest we auto-save XP, streaks, and game progress on this device (localStorage + browser backup).
How saving works
- Guest — progress stays on this browser. We also mirror key data (tokens) in a cookie and a full snapshot in IndexedDB when possible.
- Account — same data can sync to the cloud so another phone/laptop can log in and merge progress.
- Open any game’s ☰ menu → Save & Return or use ☁ on the home screen to force a sync.