Play ↗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.
Analytics in this demo
Google Analytics is enabled by default in this demo. It uses analytics cookies and browser identifiers to measure visits and gameplay, including levels, tiles, timing, hints and the tutorial. Google receives connection information. Counts are not an exact number of people. URL queries, referrers, backups, typed text and raw errors are not sent. Google signals and advertising personalization are disabled.
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.