A little data. A better game.

400.cafe uses a guest name and a signed session to reconnect you to your table. Your browser saves that session, your last table, and your local win/loss record. No email or password is needed.

We record game starts, accepted moves, completed rounds and games, CPU/human seat counts, timeouts, connection failures, and basic play/share actions. These help us fix stuck games and understand whether people return to play. A random guest ID can link gameplay in the same browser; it does not identify a unique person.

Our gameplay analytics do not include names, card values, message contents, full invitation URLs, or IP addresses. Hosting and security services may process connection information to deliver and protect the site. Cloudflare Web Analytics measures site usage and browser performance.

Aggregate gameplay telemetry is retained by Cloudflare Analytics Engine for up to three months. Match summaries and the days on which a guest ID plays are retained for product and return-play analysis. Clearing site data removes your saved guest session and local record; it does not delete previously collected server metrics.

There are no advertising trackers or session recordings. We don’t sell gameplay data. For questions or deletion requests, contact the creator through ahmedkaddoura.com.

Updated September 7, 2026.