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Privacy Policy

Last updated: August 21, 2026

At netsudoku.com, we are committed to safeguarding the privacy of our visitors. This Privacy Policy outlines the types of information we collect, how it is used, and the steps we take to protect your data.

1. Information Collection

We do not require users to register to play standard Sudoku. If you choose to register a player profile or connect via a social login provider (Google, Facebook, Reddit), we collect:

  • Your email address.
  • Your public profile name or initials.
  • Game progress metrics (wins, losses, best times, score balance).

2. Cookies and Storage

We use local storage (`localStorage`) on your device to persist your gameplay settings (sound toggle, themes, mistake highlights, focus preference) and your local stats so you don't lose progress when closing the browser.

We integrate third-party services like Google Analytics and Google AdSense. These services use cookies to analyze web traffic and deliver advertisements.

3. Third-Party Advertising & Google AdSense Disclosures

Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to netsudoku.com or other websites on the Internet.

  • Google's use of advertising cookies (including DART cookies) enables it and its partners to serve ads to users based on their visit to our site and/or other sites across the Internet.
  • Users may opt out of personalized advertising by visiting Google Ads Settings.
  • Alternatively, users can opt out of a third-party vendor's use of cookies for personalized advertising by visiting www.aboutads.info.
  • To learn more about how Google processes data when you use our partners' sites or apps, visit Google’s Privacy & Terms.

4. How We Use Information

We use the collected details to:

  • Maintain and synchronize your player rank and tournament progress.
  • Analyze site traffic to improve performance and responsiveness.
  • Deliver advertisement placements and manage your virtual coin balance.

5. Information Sharing

We do not sell, rent, or trade your personal information to third parties. Data is only shared when required by law or to protect our services from malicious behavior.