Terms of Service

Effective 12 August 2026 · Last updated 12 August 2026

These terms are the agreement between you and Kiliworld ("we", "us") covering the Sudoku app (com.kiliworld.sudoku), its desktop build, the backend service it connects to, and this website — together, the "Service". By installing or using the Service you accept these terms. If you do not accept them, do not use the Service.

1. Who may use the Service

You must be at least 13 years old, or the minimum age of digital consent in your country if that is higher. If you are under the age of majority where you live, you may use the Service only with the involvement of a parent or guardian who agrees to these terms on your behalf.

2. Your licence to use the app

We grant you a personal, non-exclusive, non-transferable, revocable licence to install and use the app on devices you own or control, for your own non-commercial entertainment. That is all this licence grants. You may not:

• copy, sell, rent, sublicense or redistribute the app;
• reverse-engineer, decompile or modify it, except to the extent that applicable law expressly permits despite this restriction;
• remove or obscure any proprietary notice in it; or
• redistribute a modified copy of it under any name.

We retain all rights in the Service, including its code, artwork, name and branding.

3. Accounts

Solo play does not require an account. An account is required for multiplayer rooms. When you create one:

• give an email address you actually control, and accurate information;
• keep your password confidential — you are responsible for everything done through your account;
• tell us promptly at [email protected] if you believe your account has been accessed without your permission;
• do not share, sell or transfer your account, and do not create an account for someone else without their permission;
• keep one account per person. Creating additional accounts to evade a suspension is a breach of these terms.

What we store for an account, and how it is protected, is set out in the Privacy Policy.

4. Acceptable use

You agree not to:

• choose a display name that is obscene, hateful, harassing, deceptive, impersonates another person, or infringes someone's rights — display names are visible to other players, and we may change or reset one that breaches this;
• harass, abuse, threaten or deliberately disrupt the play of others in a multiplayer room;
• use bots, scripts, automated clients, modified clients or any other means to interfere with normal play or to gain an unfair advantage;
• attempt to access accounts, rooms or data that are not yours;
• probe, scan or test the security of the Service, or circumvent its rate limits, authentication or other protective measures;
• send automated or excessive traffic to our servers, or otherwise impose an unreasonable load on them;
• use the Service for anything unlawful, or in breach of any law that applies to you.

5. Availability and changes

We may change, suspend or discontinue any part of the Service at any time, including the multiplayer backend. We aim to give notice of a significant change where we reasonably can, but the Service is offered without any guarantee of uptime, and no part of it is guaranteed to remain available. We may also impose or adjust usage limits to keep the Service running for everyone.

6. Ending the agreement

You may stop using the Service at any time, and may delete your account at any time — see Delete account. We may suspend or terminate your access if you breach these terms, if your use puts the Service or other players at risk, or if we are required to by law. Where it is reasonable to do so, we will tell you why.

On termination your licence under section 2 ends. Sections 7, 8, 9 and 11 survive.

7. No warranty

The Service is provided "as is" and "as available", without warranty of any kind, whether express, implied or statutory, including any implied warranty of merchantability, fitness for a particular purpose, accuracy, or non-infringement. We do not warrant that the Service will be uninterrupted, timely, secure or error-free, that defects will be corrected, or that data you store through it will not be lost.

Some jurisdictions do not allow the exclusion of implied warranties, so parts of this section may not apply to you.

8. Limitation of liability

To the fullest extent permitted by law, we are not liable for any indirect, incidental, special, consequential or punitive damages, or for any loss of data, profits, revenue, goodwill or opportunity, arising out of or connected with your use of the Service — even if we were advised that such damages were possible.

Our total aggregate liability arising out of or relating to the Service is limited to the greater of the amount you paid us for the Service in the twelve months before the claim, or 50 US dollars.

Nothing in these terms excludes or limits liability that cannot lawfully be excluded or limited, including liability for death or personal injury caused by negligence, or for fraud. If you are a consumer, you keep all the statutory rights your local law gives you, and nothing here overrides them.

9. Indemnity

You agree to indemnify us against claims, losses and reasonable costs arising from your breach of these terms or your misuse of the Service, other than to the extent they were caused by us.

10. App stores

If you installed the app from Google Play, your use is also subject to Google's terms. This agreement is between you and Kiliworld only — Google is not a party to it, is not responsible for the app, and provides no support or warranty for it. Any claim about the app is directed to us, not to Google.

11. Governing law

These terms are governed by the laws of Spain, without regard to its conflict-of-law rules, and the courts of Spain have jurisdiction over any dispute arising from them. If you are a consumer resident elsewhere, this does not deprive you of the protection of the mandatory consumer law of your country of residence, or of the right to bring proceedings in your local courts where that law gives you that right.

12. General

• These terms, together with the Privacy Policy, are the entire agreement between us about the Service.
• If a provision is found unenforceable, the rest stays in force and the provision is applied as far as it lawfully can be.
• Our not enforcing a provision on one occasion is not a waiver of it.
• You may not assign your rights under these terms; we may assign ours to a successor of our business.

13. Changes to these terms

We may update these terms. The "last updated" date above changes when we do, and material changes will be announced in the app or by email to the address on your account before they take effect. Continuing to use the Service after a change takes effect means you accept the updated terms; if you do not, stop using the Service and delete your account.

14. Contact

Kiliworld — [email protected]