Play American Mah Jongg Online — Free

americanmahjongg.app is a free, browser-based American Mahjong game where you play complete games against computer opponents using the official 2026 National Mah Jongg League (NMJL) card — no download, no signup, and no ads.

Start a full game in about 30 seconds. The Charleston, calling discards, joker rules, and Mah Jongg validation are handled automatically, so you can practice real NMJL play against the computer whenever you want. The 2025 card is also supported.

Why play here

• Completely free — no subscription, no in-app purchases, no ads.
• No download or signup — runs in any web browser on desktop, tablet, or phone.
• A full game vs. the computer — real four-player American Mahjong against computer opponents, not tile-matching solitaire.
• Current 2026 NMJL card — practice this year's hands (2025 available as an archive).

New to American Mahjong?

• How to play American Mahjong: complete beginner walkthrough
• Official NMJL rules: the full ruleset
• The Charleston: how the tile-passing ritual works
• Joker rules: wild-tile mechanics and exchanges
• Printable cheat sheet: free 2-page quick reference
• FAQ: common questions about playing online

Not affiliated with the National Mah Jongg League. The official card must be purchased from the NMJL.