Overview
detroit.games is a browser-based multiplayer card game platform. This policy explains what information we collect, why we collect it, and how you can control it. We keep things simple: we collect what we need to run the site and nothing more.
Information we collect
Account information
When you sign in with Google or Facebook, we receive your name, email address, and profile picture from the provider. We store these to identify your account. We do not access your contacts, posts, or any other data from these services.
If you sign in as a guest, no personal information is collected. Guest sessions are ephemeral and are not stored in our database.
Information you provide
During sign-up you may optionally provide your birth year, region, and city. You may also add social handles (Discord, Bluesky, X) to your profile. All of these are voluntary.
Game data
We store game history, results, and statistics (games played, games won, hands played, etc.) to provide your stats page and leaderboards.
Technical data
We use Sentry for error and crash reporting. When an error occurs, Sentry may collect technical details such as browser type, operating system, and a stack trace. This data is used solely to diagnose and fix bugs. No personal information is intentionally included in error reports.
Cookies & local storage
We use a single HTTP-only session cookie (detroit_jwt) to keep you signed in. It is marked Secure and SameSite=Strict. It expires after 30 days.
We also use your browser's local storage to remember your display preferences (such as your last sign-in provider). No tracking cookies are set by detroit.games.
During sign-up, we ask for your consent preferences across three categories:
- Functional cookies — preferences, theme, and in-game settings.
- Analytics — anonymous usage and crash reports (Sentry).
- Ad personalization — whether your age range and region may be shared with our ad network to show more relevant ads.
You can change these preferences at any time from your account settings.
Advertising
detroit.games is ad-supported. Ads are displayed between games and do not interrupt active gameplay. If you have opted into ad personalization, your age range and region (not your name, email, or other identifying information) may be shared with our ad partner at the time an ad is requested. No personal data is sold.
How we use your information
- To authenticate you and maintain your session.
- To display your profile, game stats, and match history.
- To enable social features like friend invites and private games.
- To diagnose errors and improve the platform (via Sentry).
- To serve ads that support the platform.
We do not sell your personal information. We do not use your data for purposes beyond operating detroit.games.
Data sharing
We share data with third parties only as described below:
- Google & Facebook — authentication only. We send nothing back to these providers.
- Sentry — error reports containing technical (non-personal) data.
- Ad network — age range and region only, and only if you have opted in to ad personalization.
We do not share your data with data brokers, analytics companies, or any other third parties.
Data retention & deletion
Your account data is retained for as long as your account exists. You can delete your account at any time from your account settings. When you delete your account:
- Your profile, email, name, and picture are permanently deleted.
- Your friendships and invite codes are removed.
- Game history records are retained for leaderboard integrity but are anonymized — only your player ID remains, with no link back to your identity.
Children
detroit.games is not directed at children under 13. We do not knowingly collect personal information from children under 13. If you believe a child under 13 has provided us with personal information, please contact us and we will delete it.
Changes to this policy
If we make material changes to this policy, we will update the date at the top of this page. Continued use of the site after changes constitutes acceptance of the updated policy.
How to delete your data
You can permanently delete your account and all associated data at any time:
- Sign in to your account at detroit.games.
- Open your profile page.
- Scroll to the bottom and click the Delete Account button.
This will immediately and permanently remove your profile, email, name, picture, friendships, and invite codes. Game history records are anonymized so they can no longer be linked back to you.
Contact
Questions or concerns about this policy? File an issue on our GitHub issue tracker or use the in-game feedback button.