Privacy

Last updated: 7 October 2026.

Progress stays in your browser

Marsdoku stores puzzle progress, completed levels, hint usage, settings, onboarding completion and language preference in local storage. There are no player accounts or cloud saves. Exported backups are downloaded to your device; imported backups are processed locally.

Visit measurement and optional gameplay analytics

Google Analytics loads on every visit with analytics storage denied until you opt in. Cookie-free signals measure visits without reading or writing analytics cookies. Google still receives connection information; this is not fully anonymous or an exact count of unique people. Google signals and advertising personalization are disabled. Page URL queries and referrers are omitted.

Allowing analytics enables cookies and detailed gameplay events, including levels, tile coordinates, timing, hints and tutorial actions. Change this choice in Settings → Analytics. Turning it off stops custom events and removes first-party analytics cookies where possible; cookie-free visit signals continue. No backups, typed text or raw errors are sent. See Google’s privacy policy.

Language and hosting

The hosting service receives ordinary connection information, including your IP address, to deliver the game. Automatic language selection uses a country code supplied by the host, when available, and your browser’s language preferences. The game does not store your raw IP address.

Audio and ads

Music and sound assets play locally after download. No microphone input is requested. Google H5 Games Ads are prepared for optional video hints and ads between completed puzzles. Ad requests remain disabled until publisher approval and an advertising consent platform are configured. When enabled, Google may process cookies, IP addresses and browser information to deliver and measure ads. Advertising consent is separate from the optional analytics choice. Declining advertising consent leaves the game playable. See Google’s advertising privacy information.

Reset or move your data

Clear this site’s browser data to remove saved progress and preferences. Export a backup first if you want to keep your progress. Browser storage is specific to the domain; export from the old preview and import at marsdoku.com when switching.