Classic Sudoku

Privacy Policy

Last Updated: October 2023

Thank you for visiting Classic Sudoku. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you visit our website. We are committed to protecting your privacy and ensuring that your personal information is handled in a safe and responsible manner.

1. Information We Collect

1.1 Personal Information

We do not require users to create an account or provide personal information to play our Sudoku game. However, if you choose to contact us via email, we may collect:

  • Email address
  • Any other information you voluntarily provide in your message

1.2 Non-Personal Information

We automatically collect certain non-personal information when you visit our website, including:

  • Browser type and version
  • Operating system
  • Referral source
  • Pages visited and time spent on each page
  • IP address (anonymized)

2. Data Collection and Usage Table

Data Type Purpose Collection Method Retention Period
Email Address Responding to inquiries Voluntary submission 6 months after resolution
Browser Information Improve website performance Automatic collection 30 days
Usage Statistics Analyze website traffic Through Plausible Analytics 90 days
Game Preferences Enhance user experience Local storage only Until browser data is cleared

3. How We Use Your Information

We use the collected information for the following purposes:

  • To respond to your inquiries and provide customer support
  • To improve our website and user experience
  • To monitor website performance and analytics
  • To ensure the security of our website
  • To comply with legal obligations

4. Third-Party Services

We use third-party services to help operate our website and improve our services. These third parties have access to your information only to perform these tasks on our behalf and are obligated not to disclose or use it for any other purpose.

4.1 Cloudflare

We use Cloudflare to improve website performance, security, and availability. Cloudflare may collect and process certain information about your visit, including your IP address, browser type, and page requests. For more information, please see Cloudflare's Privacy Policy.

4.2 Plausible Analytics

We use Plausible Analytics, a privacy-focused analytics tool, to track website usage and performance. Plausible Analytics does not use cookies and collects only aggregated data that cannot be used to identify individuals. For more information, please see Plausible Analytics Privacy Policy.

5. Cookies and Similar Technologies

We use minimal cookies on our website. Unlike many websites, we do not use tracking cookies or third-party advertising cookies. The only cookies we may use are:

  • Essential cookies for website functionality
  • Preference cookies to remember your game difficulty preferences

You can control cookies through your browser settings, but please note that disabling cookies may affect your ability to use certain features of our website.

6. Children's Privacy (COPPA Compliance)

Our website is designed for general audiences and does not knowingly collect personal information from children under the age of 13. If we become aware that we have collected personal information from a child under 13 without parental consent, we will promptly delete that information. If you believe that a child has provided us with personal information, please contact us at 13324598537@163.com.

7. California Consumer Privacy Act (CCPA) Rights

California residents have certain rights under the CCPA regarding their personal information. If you are a California resident, you have the right to:

7.1 Right to Know

You have the right to request information about the categories and specific pieces of personal information we have collected about you, the categories of sources of such information, the business purpose for collecting or selling personal information, and the categories of third parties with whom we share personal information.

7.2 Right to Delete

You have the right to request that we delete any personal information we have collected from you, subject to certain exceptions.

7.3 Right to Opt-Out

You have the right to opt-out of the sale of your personal information, although we do not sell personal information.

7.4 Right to Non-Discrimination

You have the right to not be discriminated against for exercising any of your CCPA rights.

To exercise these rights, please contact us at 13324598537@163.com with your request. We may require verification of your identity before processing your request.

8. Security of Your Information

We take the security of your information seriously and implement reasonable security measures to protect it from unauthorized access, disclosure, alteration, or destruction. However, no method of transmission over the Internet or electronic storage is completely secure, so we cannot guarantee absolute security.

9. Links to Other Websites

Our website may contain links to third-party websites. We are not responsible for the privacy practices or content of these third-party websites. We encourage you to review the privacy policies of any third-party websites you visit.

10. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. When we make changes, we will update the "Last Updated" date at the top of this page. We encourage you to review this Privacy Policy periodically to stay informed about our privacy practices.

11. Contact Us

If you have any questions or concerns about this Privacy Policy or our privacy practices, please contact us at:

Email: 13324598537@163.com

12. Compliance with Google Policies

This website and its privacy practices are designed to comply with Google's policies for AdSense and other Google services, including:

  • Prohibition of collecting personally identifiable information from users of Google's advertising services
  • Clear disclosure of data collection and usage practices
  • Proper handling of children's data in compliance with COPPA
  • Transparency regarding third-party services used on the website
  • Implementing appropriate security measures to protect user data