Chainle Mini Chrome Extension Privacy Policy

Last updated: November 14, 2026.

This policy applies to Chainle Mini, the Chrome extension provided by Chainle, the operator of playchainle.org. The extension lets you play five-round word connection games in a browser popup, including daily puzzles, archive puzzles, and unlimited practice.

The extension works offline, requires no account, and does not collect or transmit your personal information to us or to third parties. Your game progress stays in your browser.

Information stored on your device

The extension uses its own browser localStorage to save:

• Puzzle identifiers, puzzle versions, and puzzle hashes so progress is associated with the correct game data.
• The words you submit, your round progress, and whether you are entering a guess, viewing a scored round, or have finished a game.
• A randomly generated practice seed and game counter used to select and resume unlimited-practice puzzles. These values are used for puzzle selection, not as tracking identifiers.

Scores are calculated locally using the bundled vocabulary and scoring tables. When you reopen a saved puzzle, the extension recomputes its scores from your saved guesses. Daily, archive, and practice progress are separate from your progress on the website and are not synchronized across devices or with a Chainle account.

Your submitted words are stored as game data. Please avoid entering sensitive personal information.

Offline gameplay and network access

The game code, vocabulary, puzzle schedule, and scoring tables are included in the installed extension. Loading these resources reads files from the extension package; it does not send your guesses to a scoring server.

During gameplay, the extension does not send scores, guesses, puzzle history, device identifiers, or other usage data to Chainle or any third party. It does not include analytics, advertising, tracking pixels, crash-reporting services, or remotely loaded game code. It does not create tracking cookies.

Browser permissions and access

The extension declares Chrome's storage permission for local game persistence. The current implementation saves progress in the extension's own localStorage; it does not use Chrome Sync to upload or synchronize that progress.

The extension does not request website host permissions or inject content scripts into web pages. It does not read your browsing history, open tabs, the content of websites you visit, website cookies, passwords, or information entered into other websites.

Sharing and use of information

We do not receive the game data saved by the extension. We do not sell, rent, share, or use that data for advertising, profiling, or model training. There is no automatic submission of your scores, guesses, or game history to the website's leaderboard or community features.

Website links and this policy page

The extension includes optional links to playchainle.org and its how-to-play guide. Clicking one opens the website. The extension does not record or report your link clicks, and it does not attach your saved guesses or game progress to these links.

Visiting the website, including this privacy policy page, creates ordinary website requests. The website may process request information and use cookies or analytics as described in the separate Chainle website privacy notice. Those website practices do not apply to the extension's offline gameplay. Any game you choose to play on the website is also covered by that website notice.

Retention, deletion, and your choices

Saved games remain in your browser until the extension's local data is cleared or the extension is removed. The extension does not currently provide an automatic expiration period or an in-game delete-all control.

You can remove the extension through Chrome's extension management page. To clear its stored data while keeping it installed, use Chrome's developer tools for the extension to clear its localStorage. Clearing data removes saved progress and resets the practice sequence. Clearing playchainle.org website data separately does not clear the extension's own storage.

If browser settings prevent local storage, gameplay may still work, but progress may be lost when you close or reopen the popup. We cannot recover deleted extension saves because we do not hold a server copy.

Changes to this policy

We will update this page and its revision date when the extension's privacy practices change. Any future feature that changes how information is handled will be described in the updated policy.

Contact

For questions about Chainle Mini or this policy, please visit playchainle.org.