1. Agreement to these terms
These Terms of Service ("Terms") are an agreement between you and Rocket Game Station ("we", "us") governing your use of the mobile game Sudoku: Challenge a Friend (the "App"). By downloading, installing, or using the App you accept these Terms. If you do not accept them, do not use the App.
Your use of the App is also subject to our Privacy Policy, which forms part of these Terms.
2. What the App is
The App is a Sudoku puzzle game. It provides classic puzzles across several difficulty levels, a daily challenge with streaks, achievements and statistics, board themes, a learning mode, and optional online features — leaderboards, tournaments, and head-to-head challenges against another player.
The core puzzle gameplay works without an internet connection. Online features require a connection and may be unavailable from time to time.
3. Eligibility
You must be at least 13 years old to use the App's online features. If you are under the age of majority where you live, you may use the App only with the involvement of a parent or guardian who agrees to these Terms.
4. Your conduct
You agree not to:
- Use the App for any unlawful purpose
- Submit scores obtained by cheating, automation, tampering, or any means other than genuinely solving the puzzle
- Attempt to gain unauthorised access to our systems or another player's data
- Interfere with, disrupt, or place unreasonable load on the App or its servers
- Reverse engineer, decompile, or attempt to extract the source code of the App, except to the extent this restriction is prohibited by law
- Harass, abuse, or impersonate other players
5. Display names
You choose your own display name. It is shown publicly to other players, so you must not use a name that is offensive, obscene, hateful, impersonates another person, infringes anyone's rights, or contains personal contact details. We may change or remove any display name that breaches this section, without notice.
6. Leaderboards and challenges
Leaderboards, tournaments and daily challenges are provided for entertainment. We may reset, re-rank, correct or remove entries — including yours — where we reasonably believe a result is invalid, obtained by cheating, or affected by a technical fault. We do not guarantee that any leaderboard will remain available, and no prize or reward of monetary value is offered.
Because the App has no user accounts, your results are tied to a random identifier stored on your device. If you clear the App's data, uninstall it, or switch devices, your progress and leaderboard identity cannot be recovered.
7. Advertising
The App is funded by advertising and displays banner, interstitial, and optional rewarded advertisements supplied by Google AdMob. By using the App you accept that advertisements will be shown. Rewarded advertisements are always optional — you choose whether to watch one in exchange for an in-game benefit such as a hint. Where required by law, we ask for your consent before showing personalised advertisements, and you can withdraw that consent at any time in the App's settings.
We are not responsible for the content of third-party advertisements or for any site or product they lead you to.
8. Price and purchases
The App is currently free to download and play, and contains no in-app purchases. If we introduce purchases in a future version, they will be handled by Google Play under its own payment and refund terms, and we will update these Terms before doing so.
9. Intellectual property
The App — including its code, graphics, sounds, themes, and the name "Sudoku: Challenge a Friend" — is owned by us or our licensors and is protected by intellectual property law. We grant you a personal, non-exclusive, non-transferable, revocable licence to use the App on devices you own or control, for your own non-commercial use. You may not copy, modify, distribute, sell, sublicense, or create derivative works from the App or any part of it.
The word "Sudoku" is a generic term for the puzzle type and is not claimed as our trademark.
10. Third-party services
The App relies on services operated by Google — Firebase Realtime Database, AdMob, and Google Play services. Your use of the App through those services is also subject to Google's terms. We are not responsible for their availability, performance, or acts.
11. Disclaimer of warranties
The App is provided "as is" and "as available", without warranty of any kind, whether express or implied, including any implied warranty of merchantability, fitness for a particular purpose, or non-infringement. We do not warrant that the App will be uninterrupted, error-free, secure, or that defects will be corrected, or that any puzzle, score, or leaderboard will be free of error.
Nothing in these Terms excludes or limits any right you have as a consumer that cannot be excluded or limited by law.
12. Limitation of liability
To the fullest extent permitted by law, we will not be liable for any indirect, incidental, special, consequential, or punitive damages, or for any loss of data, progress, scores, or profits, arising out of or connected with your use of the App — even if we have been advised of the possibility of such damages.
To the fullest extent permitted by law, our total aggregate liability arising out of or connected with the App will not exceed the greater of the amount you have paid us for the App (which, at present, is nothing) or USD 10.
13. Termination
You may stop using the App at any time by uninstalling it. We may suspend or terminate your access to the App's online features, or remove your entries, if you breach these Terms or if we reasonably believe your use harms other players or our systems. Sections 9, 11, 12 and 14 survive termination.
14. Changes, governing law, and contact
We may amend these Terms. When we do, we will update the date at the top of this page and, where the change is significant, notify you in the App. Continuing to use the App after a change means you accept the amended Terms.
These Terms are governed by the laws of the Arab Republic of Egypt, and you and we agree to the exclusive jurisdiction of its courts, without prejudice to any mandatory protection you enjoy under the law of your country of residence.
Questions about these Terms:
Rocket Game Station
rocketgamestation.dev@gmail.com