Privacy Policy

The controller of the processing is the operator of Sudoku Multiplayer. For privacy and security reasons, the controller's full identification details are not published directly on this page. If you need those details, want to exercise your rights, or wish to send a legal communication, you can request them by writing to contacto@sudoku-multiplayer.online.

Main service domain: sudoku-multiplayer.online.

The main legal basis for managing accounts, games, profiles, challenges, rankings, and associated features is performance of the contractual relationship or the application of measures requested before account creation.

For security, abuse prevention, competitive integrity, preservation of technical logs, and reasonable service improvement, the legal basis may be the controller's legitimate interest, always balanced against users' rights.

For marketing communications, non-essential analytics, advertising storage, ad personalization, and similar technologies that require consent, the legal basis will be your consent. You can withdraw it at any time.

Where information must be retained to comply with tax, accounting, contractual, security, or other legal obligations, the legal basis will be compliance with a legal obligation or the applicable legitimate interest.

To operate the platform, we use technical providers that may process data on behalf of the controller: hosting, database, authentication, transactional email, email marketing, analytics, advertising, payments, billing, taxes, consent management, monitoring, security, and support tools.

Those providers may include Supabase for authentication, database, and storage; Vercel for hosting and infrastructure; Stripe for payments, billing, taxes, subscriptions, trials, cancellations, and international transfers of payment data; Resend for transactional or operational email; Google Analytics, Google AdSense, Google Consent Mode, and Google-certified consent management tools for analytics, advertising, and consent; social login providers such as Google, GitHub, or X; and Acumbamail for consented email marketing and signup or unsubscribe management, depending on the feature used.

You accept that some providers, especially Stripe when processing payments, billing, fraud prevention, or subscription support, may carry out international transfers. Where required, valid safeguards under the applicable data-protection rules will be used.

We retain your personal data while you keep an active account or while it is necessary to provide the service, manage payments, subscriptions or trials, resolve incidents, prevent fraud, or comply with legal obligations.

When you delete your account from the website, any active trial or subscription that could renew is automatically cancelled, the authentication account is deleted, and personal data that is no longer necessary is deleted or anonymized. Some gameplay data may be retained in a detached or anonymized form to preserve ranking integrity, results, competitive history, or anti-fraud controls.

Some data may remain blocked for the periods needed for tax, accounting, contractual, security, abuse-prevention, or liability purposes.

Minors may register and use Sudoku Multiplayer if they have authorization from their parents, guardians, or legal representatives when applicable law requires it. Under the law applicable in Spain, minors under 14 need authorization from their legal representatives for processing based on consent.

We apply reasonable technical and organizational measures to protect personal data. Even so, no internet-connected system can guarantee absolute security.

This policy may be updated when the law, the service, providers, or the way data is processed changes. If the changes are relevant, they will be communicated through reasonable means within the platform.

This policy is interpreted in accordance with the law applicable in Spain. The applicable country of jurisdiction will be Spain, without prejudice to any mandatory consumer-protection rules that may apply.