Legal Disclaimer & Trademark Notice
Last updated August 5, 2026. Questions? Email hello@rosemahjong.app.
Independent Operation & Non-Affiliation
Rose Mahjong is an independent application, educational training aid, and interactive scorekeeper developed by Rose Mahjong.
Rose Mahjong is not affiliated with, authorized by, sponsored by, or endorsed by the National Mah Jongg League (NMJL) or any other official mahjong association or publisher.
Intellectual Property & Nominative Fair Use
Trademarks: "National Mah Jongg League" and "NMJL" are registered trademarks of their respective owners. Any references to these marks, as well as references to standard annual American Mahjong rule years or card releases, are used strictly for descriptive and compatibility purposes under the doctrine of nominative fair use.
Game Mechanics: The pattern-matching calculations, bot logic, and hand proximity tools provided within Rose Mahjong represent programmatic implementations of uncopyrightable functional game mechanics and mathematical combinations.
No Direct Card Reproduction: Rose Mahjong does not reproduce, publish, host, or distribute literal copies, scans, or verbatim textual line listings of proprietary printed game cards.
Educational & Utility Purpose
Rose Mahjong is designed solely as a digital assistant, training tool, and gameplay platform. Users are strongly encouraged to support official leagues and associations by purchasing authorized, physical annual game cards directly from official distributors.