Terms of
use.

Please read these terms carefully. They govern the official Chess Mutator website, account features, support channels, mobile game, and connected services that link to these terms.

These terms can apply to the website, mobile applications, Windows or macOS software, and a Steam-distributed build when the relevant version is released. A supported email, Google, Apple, or Steam identity may be associated with one Chess Mutator account only through the applicable verified flow; this does not transfer store ownership or authorize duplicate accounts, and conflicts require account-owner verification.

1. Scope and acceptance

These Terms form an agreement between you and the Chess Mutator operator. Visiting the website, creating or using an account, using the mobile game, or contacting support means you accept these Terms and the Privacy Policy. If you do not accept them, do not use the services.

2. Eligibility and authority

You must be legally able to enter a binding agreement. Where required, a minor may use the services only with a parent or legal guardian. Keep provided information accurate and current; we may refuse access to protect users, the service, or legal rights.

3. Accounts and authentication

Use only one account for yourself unless approved otherwise. Do not impersonate others, use unauthorized or disposable email, provide false information, or register for another person without permission. Protect passwords, reset links, sessions, and devices. Reset links are one-use credentials and may expire. Supabase authentication terms also apply.

Playing on more than one device

You can access your Chess Mutator account from different devices. However, playing simultaneous matches on the same account across multiple devices is not currently supported. Starting a new match on another device may cause your existing open match to be ended. In that case, rewards from the incomplete match may not be saved, and a daily attempt used on mobile may not be refunded. We recommend finishing an active match before switching devices. If you experience a problem, please contact the Chess Mutator support team at [email protected].

4. Acceptable use

Use the services lawfully, personally, and as intended. Do not infringe rights, bypass authentication or rate limits, introduce malware or excessive automated traffic, scrape or interfere, reverse engineer or resell the services where prohibited, use cheats or modified clients for unfair advantage, transmit unlawful or harmful content, or build a competing product without written permission. We may investigate and preserve information needed to protect the service.

Usernames displayed on the global leaderboard are user-generated public names. Players may report a name that appears inappropriate; reports are reviewed through protected service controls, and we may restrict or replace a name when necessary to protect the service, users, or legal rights. A report does not by itself decide an outcome, and report details are not publicly disclosed.

5. Game rules and updates

Rules, mutations, levels, balancing, artwork, progression, features, availability, and supported devices may change. Website descriptions do not guarantee a release date, difficulty, feature, score, or outcome. You are responsible for a compatible device, network, operating system, and current app version. App stores control their own installation, billing, refunds, and updates. Nothing here authorizes gambling or transfer of account access.

6. Intellectual property

The Chess Mutator name, logos, design, rules, software, text, artwork, environments, mutations, music, audiovisual materials, layout, and compilation belong to or are licensed by the operator. We grant a limited, revocable, non-exclusive, non-transferable, non-sublicensable licence for personal use. Do not remove notices, claim our work, use it in advertising or machine-learning datasets, or imply endorsement.

7. Feedback and communications

By sending feedback, reports, suggestions, screenshots, or other material, you grant a worldwide, royalty-free, transferable, sublicensable licence to use, reproduce, modify, analyse, and incorporate it to operate, secure, improve, and promote the services. Do not send confidential material you cannot share. We may contact you about security, service changes, support, legal notices, and operations.

8. Third-party services and links

The services may rely on Supabase, Cloudflare, app stores, email, hosting, security infrastructure, and other providers. They operate independently and have their own terms and privacy notices. We do not control their availability or practices, and a link is not an endorsement.

9. Availability, suspension, and termination

We may change, restrict, suspend, discontinue, or remove services, accounts, or pages. Access may be suspended or terminated for breach, security or legal risk, abuse, fraud, maintenance, incident response, or compliance. You may stop using the services at any time; contact [email protected] for account deletion or account issues. Terms that should survive termination remain in force.

10. Disclaimers

To the maximum extent permitted by law, services are provided “as is” and “as available”, without warranties of fitness, quality, non-infringement, uninterrupted or error-free operation, compatibility, preserved progression, or freedom from harmful code. You use them at your own risk, and mandatory rights are not limited.

11. Limitation of liability

To the maximum extent permitted by law, the operator and contributors are not liable for indirect or consequential loss, lost profits, data, goodwill, opportunities, interruption, device damage, unauthorized access, third-party services, network conditions, or other users’ content. Total liability is limited to the greater of the relevant twelve-month amount paid or USD 100, except where law does not allow limitation.

12. Indemnification

To the extent permitted by law, you agree to defend and hold harmless the operator, contributors, contractors, and providers from claims or costs arising from your breach, unlawful use, account misuse, rights infringement, or submitted material. We may control the defence and you agree to cooperate.

13. Changes

We may update these Terms when the services, law, security practices, or business model changes. We will publish a revised effective date and additional notice where practical. Continued use after that date means acceptance; otherwise stop using the services and request closure if needed.

14. Governing law

Mandatory consumer protections remain unaffected. Subject to those rights, these Terms are governed by the laws of Türkiye and disputes belong before the competent courts of Istanbul unless mandatory law requires another forum. Invalid provisions are limited to the minimum necessary; the remaining Terms continue.

15. Contact

Questions, legal notices, account requests, and reports should be sent to [email protected]. Never include passwords, reset links, access tokens, or other secrets.

16. Steam distribution supplement

This section supplements the Terms of Use and applies only if and when a Chess Mutator build is made available through Steam. This page establishes the terms for Steam distribution when a Chess Mutator build is made available through Steam; it does not by itself announce a release or create a Steam entitlement.

17. Steam and Chess Mutator accounts

Your Steam account is operated by Valve and remains separate from a Chess Mutator account. Steam authentication, ownership checks, and any association must be validated by a secure server. No Steam account is merged with a mobile-store account merely because the same person uses both. Where automatic account creation or linking is available, the game will present the applicable notice before collection and will use a defined recovery and conflict process.

Where a guest or existing Chess Mutator account is involved, supported conversion may preserve that account; an existing-account conflict requires explicit sign-in and ownership verification. No client-supplied SteamID, automatic duplicate, or unrelated local-cache merge establishes account authority, and no lossless merge is guaranteed.

18. Licence, ownership, and purchases

A Steam purchase, if offered, gives the personal-use licence and access rights made available through Steam and does not transfer ownership of the Steam account, the Chess Mutator intellectual property, or a mobile-store entitlement. The Steam Subscriber Agreement and Valve's store rules apply to the Steam relationship. Valve operates Steam checkout and refund handling; see the Steam Refund Policy. Mandatory consumer rights remain unaffected.

19. Progress, achievements, and online service

Cross-platform progression, if enabled, would be server-authoritative and subject to account identity, integrity checks, and conflict handling. It is not a promise of Steam Cloud functionality or a guaranteed lossless merge. Chess Mutator achievements and Steam achievements are separate records; any synchronization requires a released implementation and may be limited by platform rules. Online features may depend on network access, Supabase services, and Steam services, so offline availability is not guaranteed.

Internal Chess Mutator achievement records remain server-authoritative. Steam achievement records are a separate platform record; they cannot establish purchase ownership or Chess Mutator account authority. Where synchronization is enabled, retries and reconciliation may be needed, and an unavailable Steam service may delay or prevent mirroring.

20. Linking, unlinking, recovery, and support

Linking a Steam identity to a Chess Mutator account is not the same as synchronizing progress. Where unlinking is available, it removes the association and does not by itself delete the Chess Mutator account or Steam account. Account deletion is a separate verified request through the account deletion page; it may remove current account-owned state and cannot delete Valve's Steam records. For help, use Support or [email protected].

21. Steam account-data notice

Read the Steam account-data notice below before linking or sending Steam data. It is a transparency notice, not a consent request. Any feature that collects or sends Steam data must show this notice at or before the point of collection.