Privacy Policy

This privacy policy explains how americanmahjongg.app collects, uses, and protects your information when you use our website and online game.

Who We Are

americanmahjongg.app is a free online American Mah Jongg game. We are an independent project based in the United States. If you have any questions about this policy, contact us through our contact form.

What Data We Collect

When you create an account we collect your email address, display name, and authentication provider (email, Google, or Facebook). We also record an estimated country (we do not store your IP address), game statistics, and the session data required to keep you logged in. If you play as a guest, we do not collect any personal information.

How We Use Your Data

We use your data to provide and maintain your account, display your name on the in-game leaderboard, track your game history and statistics, reconnect you to games in progress, send account-related emails, and improve the game experience.

Cookies

We use essential cookies only: an authentication cookie that keeps you logged in and a session identifier that connects you to your active game. We do not use advertising cookies or cross-site tracking cookies.

Data Deletion

You can ask us to delete your account and data at any time. See the data deletion instructions.

The full policy on this page also covers third-party services, data sharing, data retention, children's privacy, California residents (CCPA), affiliate disclosure, changes to this policy, Do Not Track, and security.

Free printable American Mah Jongg cheat sheet

Get a free 2-page printable cheat sheet covering the tiles, the Charleston, jokers, and scoring. Download the cheat sheet (PDF).