Privacy statement

Last updated: 2026

GuessTheDot is a topography guessing game. This page explains, in plain language, what data we handle and why. You can play singleplayer without an account; an account is only needed for multiplayer and for saving your stats online.

1. What we collect

When you create an account we store, for account management:

• Your email address (used to sign in and to recover your account);
• A display name, taken from your Google name or, for email sign-up, the part of your email before the “@”. You can change it in the Dot builder.

We do not ask for any other personal details, and we do not use your data for advertising.

2. Game data

To power the leaderboards and your progress, your profile is linked to:

• Your scores and results: per round we store whether your guess was correct, how many kilometres you were off, your reaction time, and the location that was asked;
• Your saved “Dot” avatar (colour, face, hat and its name);
• In multiplayer: your membership of a game room and the chat messages you send in that room.

This data is tied to your profile so we can show leaderboards, standings and your personal statistics dashboard.

3. Functional local storage

The game keeps a few things in your browser’s local storage so it works well without an account: your singleplayer high scores, your avatar configuration, your language choice, your daily-challenge streak and your game settings. To keep you signed in, the login system also stores a functional session token in your browser. These are strictly functional, not tracking or advertising cookies, so no separate consent banner is required.

4. How long we keep it & your rights

Online data stays while your account exists. You can permanently delete your account and all associated data at any time from the account dashboard (“Danger zone → Delete account”). This is immediate and cannot be undone. Locally stored data stays in your browser until you delete your account, clear your browser data, or play on a different device.

5. Third parties

We rely on Supabase for authentication (sign-in) and database storage; your account and game data are stored there on our behalf. If you sign in with Google, Google handles that sign-in. To display the game, your browser also loads map tiles, fonts and code libraries from external providers (such as OpenStreetMap/CARTO, PDOK and public CDNs), which by their nature receive your IP address. We do not sell your data to anyone. If you take out a Pro subscription, payment is handled by Stripe; Stripe receives the payment details you enter and we never see or store your card number. We keep only the Stripe customer and subscription identifiers needed to tell whether your account is Pro.

6. Who is responsible

The controller for the personal data described above is:

• Kopstuk Solutions (sole proprietorship under Dutch law), Paul Kop
• Chamber of Commerce (KVK): 42160804
• Email: guessthedotinfo@gmail.com