There are two separate systems here: optional device progress and the first-party service for public reviews.
Your storage choice
A small local record remembers whether you allowed lasting game progress. That choice lasts up to 180 days and can be changed from any page using Storage settings.
Your scores and favourites
The current tab can keep your personal bests, saved games and play counts. Persistent storage is only used after you choose it. “Clear device progress” removes those records from this browser, not public comments.
The review service
First-party cookies recognise this browser’s feedback and protect submissions. The visitor cookie can last one year; the session cookie lasts for the browsing session, with server sessions subject to expiry. The JSON review file is separate from device storage.
No advertising switches to guess
There are no analytics or advertising trackers in this site. You do not need to enable optional progress storage to play or use the public review form. Learn more about public feedback on the Privacy page.
