Home games · Free browser app for American mah jongg: solo play against bots, live and async games with friends, pass-and-play and lessons
Mama Jong
Also called mamajong; Mama Jong American Mah Jongg
Online, in a web browser (installable web app). Says "Made in the USA"; no company name or address published on the home page. Native apps listed as coming next.
Category: Home games · Free browser app for American mah jongg: solo play against bots, live and async games with friends, pass-and-play and lessons
Also called: mamajong; Mama Jong American Mah Jongg
What it is
Mama Jong is a browser-based American mah jongg app, currently in beta, for playing solo against bots, with friends online, or around one device. It also has lessons, drills and a daily challenge.
Who it’s for
American mahjong groups who want to keep playing between in-person games, and newer players who want practice and lessons without installing an app.
Why it’s listed
It is an online way to play the full game with your own group, with features built around a regular table.
- Play with Friends: join a table with a code, live or asynchronous.
- Pass & Play: 2–4 people sharing one device.
- Play Solo: 11 bot levels and 80 bot personas.
- Groups: a home for a weekly table, with roster, standing time, reminders and between-meetup games.
- Learning Center: 16 lessons, 29 drills, Hand Helper and “Mahj of the Day”.
- Rule cards: switch, edit or share hand cards, with a community catalog.
Official URL
App and home page: https://mamajong.com/
Last checked: 2026-10-21
Location
Online, in a browser. The site says it is made in the USA; no developer name or address is published on the home page.
Notes
- Beta: the page shows “Beta · v2736 · 24 Aug 2026”. Anonymous usage stats are on during the beta and can be turned off in Settings.
- Price: the footer reads “Free ‘til October 2026”. Pricing after that was not published on the page checked, so it may change soon.
- Hand cards: the app uses switchable rule cards; whether the official NMJL card is included is not stated, and the copyrighted NMJL card should not be assumed.
- Coming next (per the site): a weekly duplicate tournament, offline local multiplayer and native iOS, Android, Mac and Windows apps.
- JavaScript required: the game needs JavaScript; it was not played for this check.
- Image: mama-jong.jpg (1200×630), the site’s own og:image share card, converted PNG→JPG.
- Not affiliated with Mahjong Plaza. No account was created.
FAQ
Q: Does it cost anything?
A: The site says it is free until October 2026. Later pricing was not published.
Q: Can my group play together online?
A: Yes. Friends join a table with a code, live or asynchronously.
Q: Can we share one tablet at the table?
A: Yes. Pass & Play supports 2–4 people on one device.
Q: Is there an app to download?
A: Not yet. It runs in the browser; native apps are listed as coming next.
Q: Is it American mahjong?
A: Yes. It is built for American mah jongg, with the Charleston and rule cards.