Privacy Policy
Last updated: 2 October 2026.
1. Who is responsible
Unstack the Cube is a free game published by Alexis Demarquis, France. Contact: support@unstackthecube.com.
One account for two games. Unstack the Cube is the second game of unstackthedock.com, next to Unstack the Dock. Both games use the same Google account: signing in on one signs you in on the other. Each game stores its own data, kept apart. Unstack the Dock has its own privacy policy, consistent with this one.
2. What data we collect
Playing as a guest: nothing about you is stored on our servers. Your progress, current level, stars, hints, removes, daily streak and daily challenge results are stored in your browser only (local storage); your daily challenge result is never sent to us. To show the leaderboard, your browser downloads it from our database provider, which sees your IP address like any website does.
Playing signed in with Google: we store
- your Google account identifier (shared with Unstack the Dock);
- your email address (kept by our sign-in provider, never shown in the game);
- your first name and the initial of your last name, taken from your Google profile;
- the web address of your Google profile picture;
- your best level in Unstack the Cube, and when you reached it (its own leaderboard);
- your game progress in Unstack the Cube: stars, hints, removes, daily streak, and the level in progress;
- for its daily challenge: the day, when you started and finished it, your time, and whether you cleared it on the first try (your daily challenge streak is calculated from these);
- the dates your account and your progress were last updated.
These Cube records are separate from the Dock's: stars, progress, daily challenges and leaderboards are not shared between the two games.
3. Why
To run the game, keep your progress across your devices, and show the leaderboard. The leaderboard is public: anyone who opens the game sees your first name and last initial, your picture and your level. The daily challenge boards are public in the same way: they show your first name and last initial, your picture, your time of the day and your daily challenge streak.
Legal basis: performance of the service you asked for by signing in.
4. Who processes it
- Supabase: database and sign-in, hosted in Ireland (EU). The same provider, account system and database as Unstack the Dock.
- Vercel: hosting, and cookieless, anonymous Web Analytics.
- Google: sign-in. Google Fonts: the page loads font files from Google servers, so Google receives your IP address. Profile pictures on the leaderboard are also loaded from Google servers.
- jsDelivr: a content delivery network that serves one script library (the Supabase client), and receives your IP address.
- cdnjs (Cloudflare): a content delivery network that serves the 3D library of the game (three.js), and receives your IP address.
We do not sell your data or share it for advertising.
5. Cookies and storage
No tracking cookies, and no cookies at all set by the game. Local storage in your browser holds your progress and, when you are signed in, your session token, which is the same for both games. Analytics use no cookies and no personal identifiers.
6. How long
Account data is kept as long as your account exists. Guest data stays on your device until you clear your browser storage.
7. Delete your account
Open the account panel in the game and tap Delete my account. Because the account is shared, this deletes it for both games: your leaderboard entries, daily challenge results and saved progress in Unstack the Cube and in Unstack the Dock are deleted immediately and permanently. Progress kept on your device is not affected.
For any other request, email support@unstackthecube.com.
8. Your rights
You can ask to access, correct, delete or export your data, or object to its use. Email support@unstackthecube.com. You can also lodge a complaint with the CNIL (France) or your local data protection authority.
9. Children
The game has no age gate. Signing in follows Google's own age rules.
10. Changes
Last updated: 2 October 2026. Any change is posted on this page.