Privacy Policy

Last updated: July 8, 2026

Data controller: Miguel Arechaga

Tax ID (DNI): 72083190-V

Website: https://mundosudoku.com

Contact email: contacto@mundosudoku.com

1. Purpose of processing

Personal data that may be collected through this website will be used to: respond to inquiries sent by email, statistically analyze site usage to improve it, show advertising that funds the free service, and ensure the technical operation and security of the site.

2. Data collected

This website does not require registration to play. The data that may be collected includes:

• Contact data: if a user writes by email, their address and the content of the message will be processed solely to respond to them.
• Browsing data: through cookies and similar technologies, data such as IP address, device and browser type, pages visited and time spent may be collected (Google Analytics).
• Advertising data: Google AdSense may use cookies and identifiers to show ads (see section 5).
• Game data: game progress, records and statistics are stored only in the user's browser (localStorage) and are never sent to our servers.

3. Legal basis

The legal bases for processing are: the user's consent (art. 6.1.a GDPR) for analytics and advertising cookies, which can be withdrawn at any time; the performance of a relationship when the user contacts us (art. 6.1.b GDPR); and the controller's legitimate interest in maintaining and securing the website (art. 6.1.f GDPR).

4. Data retention

Data is retained only for as long as necessary to fulfill the purpose for which it was collected. Contact emails are kept until the inquiry is resolved. Analytics data is retained according to the periods configured in Google Analytics (maximum 26 months).

5. Advertising: Google AdSense

This website uses Google AdSense, an advertising service from Google Ireland Ltd. / Google LLC, to show ads:

• Google, as a third-party vendor, uses cookies (such as the DoubleClick cookie) to serve ads on this site based on a user's prior visits to this or other websites.
• With the user's consent, ads may be personalized based on their interests. Without such consent, non-personalized ads will be shown.
• Users can disable personalized advertising at Google Ads Settings, or through www.aboutads.info and www.youronlinechoices.com.
• You can review how Google handles data at How Google uses information from sites that use its services.

6. Data sharing and international transfers

Personal data will not be shared with third parties except where legally required or necessary to provide the service. The providers used (Google Analytics and Google AdSense) may involve international data transfers, covered by standard contractual clauses and the EU-U.S. Data Privacy Framework to which Google is adhered.

7. Third-party services

This site uses the following third-party services: Google Analytics (usage statistics) and Google AdSense (advertising). Both may use cookies, detailed in the Cookie Policy.

8. User rights

Users can exercise their rights of access, rectification, erasure, objection, restriction of processing and portability by emailing contacto@mundosudoku.com, indicating which right they wish to exercise. They also have the right to file a complaint with the Spanish Data Protection Agency (www.aepd.es).

9. Minors

This website offers content suitable for all audiences and does not knowingly collect personal data from children under 14. If a parent or guardian discovers that a minor has provided personal data, they may request its deletion by email.

10. Security

Technical and organizational measures have been adopted to protect personal data, including encrypted browsing via HTTPS across the entire site.

11. Changes to this policy

This policy may be updated to reflect legal or technical changes. The date of the last update appears at the top of this page.

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