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Cookie Policy

This policy explains which cookies and similar technologies Sudoku Multiplayer uses and how you can accept, reject, or withdraw consent.

Last updated

June 12, 2026

This policy applies to the use of cookies, local storage, and similar technologies in Sudoku Multiplayer.

1. What cookies are

Cookies are small files stored in your browser. We may also use similar technologies, such as local storage or session storage, to remember preferences, maintain sessions, improve security, and make the platform work correctly.

Some technologies are necessary to provide the service and do not require consent. Others, such as non-essential analytics or advertising storage, are activated only with your consent when the law requires it.

2. Necessary cookies and storage

Required for the service

`sb-*`: Supabase Auth cookies needed to maintain the session and authentication state.
`sudoku.language` and `sudoku.language.source`: cookies or equivalent storage used to remember language and the source of that preference.
`play_guest_session`: continuity identifier for guest Solo Sudoku games.
Local storage for interface preferences, analytics and advertising consent, notifications, tab coordination, product continuity, and recent games.
Technical logs needed for security, abuse prevention, error diagnosis, and basic platform operation.

3. Optional analytics and advertising

Google Analytics and Google AdSense

Providers: Google Analytics 4 and Google AdSense.
Analytics purpose: aggregated usage measurement, page performance, navigation, product improvement, and problem detection.
Advertising purpose: ad delivery, fraud prevention, reporting, frequency capping, monetization of the service, and, where consent is granted, ad personalization.
Consent mode and CMP: analytics and advertising storage start denied by default for Google tags. For users in the European Economic Area, the United Kingdom, and Switzerland, the Google-certified CMP message may collect and transmit advertising consent choices under the IAB Transparency and Consent Framework.
Before acceptance: Google services may receive consent-free pings or technical signals without analytics or advertising cookies when Google Consent Mode allows it.
After acceptance: Google services may use cookies or similar technologies such as `_ga`, `_ga_<container-id>`, advertising identifiers, or ad-related storage depending on Google configuration and your CMP choices.

Manage privacy, cookies, and ads

Use the Google Privacy & Messaging panel to change your advertising and consent choices when it is available. If the panel does not open, manage cookies and site data from your browser settings until Google CMP is available.

4. How to manage consent

You can accept, reject, or configure analytics and advertising choices from the Google-certified CMP message where it is shown. Rejecting optional analytics or advertising storage does not prevent you from using the platform.

If you later want to change your choice, use the controls on this page when Google CMP is available, or clear cookies and site data from your browser settings.

If you delete cookies or local storage, the platform may ask for consent again or you may lose some saved preferences.

5. Third parties, duration, and changes

Some cookies or technologies may depend on third parties that provide technical, authentication, analytics, advertising, or consent-management services. Those third parties may update their cookies, names, or durations according to their own configurations.

The duration of each cookie depends on its purpose. Session cookies may disappear when you close the browser; others may remain for longer to remember preferences, sessions, or consent.

This policy may be updated if the technology used by Sudoku Multiplayer changes or if new tools that use cookies or similar technologies are added.

Open Privacy Policy Open Legal Notice

Required for the service

`sb-*`: Supabase Auth cookies needed to maintain the session and authentication state.

`sudoku.language` and `sudoku.language.source`: cookies or equivalent storage used to remember language and the source of that preference.

`play_guest_session`: continuity identifier for guest Solo Sudoku games.

Local storage for interface preferences, analytics and advertising consent, notifications, tab coordination, product continuity, and recent games.

Technical logs needed for security, abuse prevention, error diagnosis, and basic platform operation.

Google Analytics and Google AdSense

Providers: Google Analytics 4 and Google AdSense.

Analytics purpose: aggregated usage measurement, page performance, navigation, product improvement, and problem detection.

Advertising purpose: ad delivery, fraud prevention, reporting, frequency capping, monetization of the service, and, where consent is granted, ad personalization.

Consent mode and CMP: analytics and advertising storage start denied by default for Google tags. For users in the European Economic Area, the United Kingdom, and Switzerland, the Google-certified CMP message may collect and transmit advertising consent choices under the IAB Transparency and Consent Framework.

Before acceptance: Google services may receive consent-free pings or technical signals without analytics or advertising cookies when Google Consent Mode allows it.

After acceptance: Google services may use cookies or similar technologies such as `_ga`, `_ga_<container-id>`, advertising identifiers, or ad-related storage depending on Google configuration and your CMP choices.

Manage privacy, cookies, and ads