Privacy Policy for V Killer Sudoku & Terms of Use For V Killer Sudoku
Privacy Policy for V Killer Sudoku
Effective date: June 15, 2026
V Killer Sudoku (“the App”) is a mobile puzzle game developed and published by V Studios (“we”, “our”, or “us”). This Privacy Policy explains how information is collected, used, and protected when you use the App.
By using the App, you agree to the practices described in this Privacy Policy.
1. Information We Collect
The App does not require you to create a personal account and does not ask you to provide your name, email address, phone number, address, contacts, photos, camera access, microphone access, or precise location.
However, the App uses third-party services that may collect limited technical and usage-related information necessary for app functionality, analytics, advertising, fraud prevention, and leaderboards.
The App may collect or process the following types of information:
Anonymous user identifier generated by Firebase Authentication
Gameplay and leaderboard data, such as score, difficulty, completion time, puzzle result, and ranking-related information
Device and app information, such as device model, operating system version, app version, language, crash or diagnostic information
Advertising identifiers and ad interaction data processed by Google AdMob
Basic usage and performance data related to app stability and service operation
We do not knowingly collect sensitive personal information.
2. How We Use Information
Information may be used for the following purposes:
To run the App and provide gameplay features
To save and display leaderboard results
To prevent abuse, cheating, or invalid leaderboard activity
To show advertisements, including banner ads and rewarded ads
To provide rewarded hints when a user voluntarily watches a rewarded ad
To improve app stability, performance, and user experience
To comply with legal, platform, and security requirements
3. Third-Party Services
The App uses the following third-party services:
Google Firebase
Firebase may be used for anonymous authentication and leaderboard storage. Anonymous authentication allows the App to identify a player without requiring a personal account. Firestore may store gameplay-related leaderboard data such as score, difficulty, puzzle completion time, and ranking entries.
Firebase services are provided by Google. Their data practices are governed by Google’s policies.
Google AdMob
The App uses Google AdMob to display advertisements. This includes banner ads and rewarded ads. Rewarded ads are optional and are used to grant in-game hints when the user chooses to watch an ad.
AdMob may collect or process advertising identifiers, device information, ad interaction data, and other information used for ad delivery, measurement, fraud prevention, and compliance.
Google’s privacy practices are described in Google’s Privacy Policy:
https://policies.google.com/privacy
4. Leaderboards
The App may include leaderboard functionality. Leaderboard entries may include gameplay-related information such as score, difficulty level, completion time, puzzle result, and anonymous user identifier.
We do not require users to submit their real name for leaderboards. If a display name or nickname feature is added in the future, users should avoid entering personal information.
5. Advertising
The App contains ads. Advertisements may be served by Google AdMob.
The App may display:
Banner ads during gameplay
Rewarded ads that users may choose to watch in exchange for in-game hints
Rewarded ads are optional. If a user does not want to watch a rewarded ad, they can continue using the App without receiving that optional reward.
6. Children’s Privacy
The App is intended for a general audience and is not specifically directed to children under the age of 13 or the minimum age required by applicable law in the user’s country.
We do not knowingly collect personal information from children. If you believe that a child has provided personal information through the App, please contact us and we will take appropriate steps to delete such information where required.
7. Data Sharing
We do not sell personal information.
Information may be processed or shared with third-party service providers such as Google Firebase and Google AdMob as necessary to operate the App, provide leaderboards, serve ads, measure performance, prevent fraud, and comply with legal obligations.
8. Data Retention
Gameplay and leaderboard data may be retained for as long as necessary to provide leaderboard functionality, maintain game records, prevent abuse, comply with legal obligations, or improve the App.
Anonymous identifiers and advertising-related data may be retained according to the policies of the relevant third-party services.
9. Data Security
We use reasonable technical and organizational measures to protect information processed through the App. However, no method of transmission or storage is completely secure, and we cannot guarantee absolute security.
10. User Choices
Users may:
Choose not to watch rewarded ads
Reset or limit advertising identifiers through their device settings where supported
Contact us to request deletion of leaderboard-related data associated with their anonymous user identifier, where technically possible and legally required
Because the App uses anonymous authentication, we may need information from the user to identify the relevant record before processing a deletion request.
11. International Data Processing
The App may use services operated by Google and other providers that process data on servers located in different countries. By using the App, you understand that information may be processed outside your country of residence.
12. Changes to This Privacy Policy
We may update this Privacy Policy from time to time. Any changes will be posted on this page with an updated effective date.
13. Contact Us
If you have questions or requests regarding this Privacy Policy, you can contact us at:
Terms of Use for V Killer Sudoku
Effective date: June 15, 2026
These Terms of Use (“Terms”) govern your use of V Killer Sudoku (“the App”), a mobile puzzle game developed and published by V Studios (“we”, “our”, or “us”).
By downloading, installing, or using the App, you agree to these Terms. If you do not agree, please do not use the App.
1. Use of the App
V Killer Sudoku is provided for personal, non-commercial entertainment use. You may use the App only in accordance with these Terms and applicable laws.
You agree not to:
Use the App for unlawful purposes
Attempt to cheat, manipulate, or exploit gameplay, scores, leaderboards, advertisements, or reward systems
Reverse engineer, decompile, modify, or tamper with the App except where permitted by applicable law
Interfere with the App’s operation, servers, advertising systems, or third-party services
Use automated tools, bots, or scripts to manipulate gameplay or leaderboard results
2. Gameplay and Difficulty
The App provides Killer Sudoku puzzles across different difficulty levels. Difficulty levels, puzzle availability, scoring rules, timers, hints, leaderboard eligibility, and other gameplay features may be updated over time.
We may add, remove, modify, lock, or unlock difficulty levels and puzzle packs at our discretion.
3. Hints and Rewarded Ads
The App may provide hints. Some hints may be available for free, while additional hints may be offered through rewarded advertisements.
Rewarded ads are optional. If you choose to watch a rewarded ad, you may receive an in-game reward such as an additional hint.
Using hints may affect leaderboard eligibility. For example, a puzzle completed with hints may be marked as not ranked.
4. Advertisements
The App contains advertisements, including banner ads and rewarded ads. Ads may be provided by third-party advertising networks such as Google AdMob.
We are not responsible for third-party advertisements, external websites, or content shown by ad providers.
5. Leaderboards
The App may include leaderboard features. Leaderboards are intended for fair play. We may remove, reset, hide, or adjust leaderboard entries if we believe they are incorrect, abusive, fraudulent, generated by cheating, or harmful to the game experience.
Leaderboard availability may depend on internet connection and third-party services.
6. No Guarantee of Availability
We aim to keep the App available and functioning properly, but we do not guarantee uninterrupted or error-free operation.
The App may be unavailable due to maintenance, updates, technical issues, internet problems, third-party service outages, or other reasons.
7. Updates and Changes
We may update the App from time to time. Updates may include bug fixes, new puzzles, new features, design changes, advertising changes, balance changes, or modifications to difficulty levels.
Some features may change or be removed without prior notice.
8. Intellectual Property
The App, including its design, code, graphics, branding, puzzle systems, interface, text, and other content, is owned by or licensed to us and is protected by applicable intellectual property laws.
You may not copy, distribute, reproduce, modify, sell, or use any part of the App except as allowed by these Terms or applicable law.
9. Third-Party Services
The App may use third-party services such as Google Firebase and Google AdMob. Your use of the App may also be subject to the terms and policies of those third-party services.
10. Disclaimer
The App is provided “as is” and “as available” without warranties of any kind, whether express or implied.
We do not guarantee that the App will always be available, secure, accurate, error-free, or compatible with every device.
11. Limitation of Liability
To the maximum extent permitted by applicable law, we will not be liable for any indirect, incidental, special, consequential, or punitive damages arising from your use of or inability to use the App.
12. Termination
We may suspend or terminate access to the App or its online features if we believe a user has violated these Terms, abused the App, manipulated leaderboards, or interfered with the App’s normal operation.
13. Changes to These Terms
We may update these Terms from time to time. Any changes will be posted on this page with an updated effective date.
By continuing to use the App after changes are posted, you agree to the updated Terms.
14. Contact Us
If you have questions about these Terms, you can contact us at:
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