Privacy notice

Last updated: September 29, 2026

In short

No cookies, no ads, no tracking across websites. The game keeps your progress on your own device. While you play, it counts anonymously how often each level is tried, unless you switch that off.

Who is responsible

The person named in the imprint is responsible for this website and the game on it.

Hosting

This website is hosted by Cloudflare, Inc. When you open it, Cloudflare processes the technical data needed to deliver the page and protect it from attacks – for example your IP address, the time and the page requested. This is our legitimate interest in running the site safely (Art. 6(1)(f) GDPR). We do not receive or keep these connection logs. Cloudflare may process data in the USA; it states that it is certified under the EU-U.S. Data Privacy Framework.

What stays on your device

The game saves your progress and settings in your browser’s local storage, so you can carry on where you left off. This never leaves your device and is needed for the game to work (§ 25(2) TDDDG). You can delete it at any time in the game (Settings → Progress) or in your browser.

Anonymous play data

To tune the difficulty of the levels, the game sends a few play events to this website’s own server: that a level was opened, and for each attempt how many tries it took, the stars, hints seen and the layout of the first try, plus the game’s version, language and board look. Each start of the game gets a random number that lives only in memory and is gone when you close the page – nothing is stored on your device for this, and we do not store your IP address with it. So we cannot tell who you are, nor recognise you next time. Legal basis: our legitimate interest in making the puzzles fair (Art. 6(1)(f) GDPR). You can switch it off on the first notice or at any time in the game’s Settings → Privacy. We delete the data once it is no longer needed for tuning, at the latest after two years.

No third parties

The website and the game load no scripts, fonts or images from other providers. There is no advertising and no analytics service.

Your rights

You have the right to access, correction, deletion and restriction of processing of your personal data, and the right to object to processing based on legitimate interest (Art. 15–18, 21 GDPR). Because the play data is anonymous, we usually cannot link it to you. You can also complain to a data protection supervisory authority.

Contact

For questions about privacy, write to the e-mail address in the imprint.