Effective date: August 31, 2026
This Privacy Policy explains how **Rail Snake** is handled from a privacy perspective by Aleksey Zhirov.
## 1. Data Collection
The game **does not collect, store, or transmit personal data to the developer**. It does not require account registration and does not request or collect your name, email address, phone number, location, contacts, photos, messages, or any other personal information.
The game serves ads, and the bundled advertising module processes technical device data on its own — see section 5.
## 2. Data Stored on Your Device
The game may store limited information locally on your device in order to function properly, such as:
- your best score;
- language preference;
- graphics or gameplay settings;
- a count of completed runs, used to keep ads out of the first runs after installation.
This information is stored **only on your device** and is **not sent to the developer**.
## 3. App Permissions
The app may use the device vibration permission (`VIBRATE`) only for gameplay feedback and visual/audio interaction support during play.
## 4. Data Sharing
The developer does not sell or disclose personal data to third parties: no such data is collected by the developer.
Data required to serve ads is processed by the advertising network itself, under its own terms. See section 5.
## 5. Ads
The game serves ads through the **Yandex Mobile Ads SDK** (Yandex Advertising Network, Yandex LLC). Two formats are used: a banner on the splash and result screens, and an interstitial between runs. No ads are shown during a run.
To select and display ads, count impressions, and prevent invalid traffic, the advertising module processes technical device data, including the advertising identifier, IP address, and device and operating system information.
This data is processed by **Yandex LLC** as an independent controller, under its own privacy policy: <https://yandex.ru/legal/confidential/>. The developer has no access to it and receives only aggregated impression and revenue statistics.
The advertising SDK ships with an adapter that reports ad revenue data to Yandex AppMetrica.
The advertising identifier can be reset or limited in the device operating system settings.
## 5.1. Analytics, Purchases, and Accounts
The game:
- does not use third-party analytics beyond what is described in section 5;
- does not include in-app purchases;
- does not create user accounts.
If any other data-processing functionality is added in a future version, this Privacy Policy will be updated before that version is released.
## 6. Data Retention and Deletion
Since the developer does not collect or store user data on external servers, there is no server-side user data to retain or delete.
Locally stored game data can be removed by:
- clearing the app’s data in Android settings; or
- uninstalling the app from the device.
## 7. Children’s Privacy
The game is not intended to collect personal data from children. If you believe that any personal data from a child has been provided to the developer, please contact the developer using the contact details below.
## 8. Security
Because the game does not transmit personal data to the developer, there is no developer-side server storage of personal data. Users remain responsible for securing access to their own devices.
## 9. Changes to This Privacy Policy
This Privacy Policy may be updated from time to time. The current version should be made available at the URL provided in the Google Play listing.
## 10. Contact
If you have any questions about this Privacy Policy, you can contact the developer:
- Developer: Aleksey Zhirov
- Email: alexdouble63@gmail.com