Privacy Policy — MetroSystem

Last updated: October 19, 2026

MetroSystem (metrosystemgame.com) respects your privacy. This policy explains what information is collected, how it is used, and how your privacy is protected while using our transit network simulator and designer web application.

1. Local Data Storage (No User Accounts Required)

MetroSystem is an in-browser client-side application. You do not need to register an account or provide personal credentials to design transit systems. All map designs, transit lines, custom fleet parameters, and construction cost estimates are saved strictly on your local device storage (localStorage). Your map designs are not transmitted to any external servers unless you choose to export them as JSON/GeoJSON files manually.

2. Advertising and Google AdSense

This website displays advertisements provided by Google AdSense. Google and third-party vendors use cookies to serve ads based on prior visits to this website or other sites on the Internet:

• Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to your website or other websites.
• Google's use of advertising cookies enables it and its partners to serve ads to users based on their visit to your sites and/or other sites on the Internet.
• Users may opt out of personalized advertising by visiting Google Ads Settings.
• Alternatively, you can opt out of a third-party vendor's use of cookies for personalized advertising by visiting aboutads.info.

3. Usage Metrics and Analytics

We may monitor aggregate, non-personally identifiable site metrics (such as page views, visitor referral sources, and approximate geographic region) to ensure stability, optimize simulator loading speed, and detect browser compatibility issues.

4. Third-Party Map Services

MetroSystem loads open map tile layers provided by OpenStreetMap and CARTO, as well as geocoding search queries through Nominatim. When rendering maps or searching cities, your browser sends requests to these services according to their standard open data and privacy policies.

5. GDPR and CCPA / State Privacy Rights

Depending on your location, you have rights regarding your personal information, including the right to request access to or deletion of data collected by third-party advertising cookies. Because MetroSystem does not collect or store user accounts, emails, or personal identities, we do not hold personal profile data.

6. Contact

If you have any questions or feedback regarding this Privacy Policy, please contact us via our official project channels or repository.