Welcome to the New Mahjong Wiki

The Mahjong Family Tree

There is much debate on the birth of Mahjong. To keep it simple this page starts with Chinese Classical.
The following shows a loose evolution of some notable Mahjong variants.

Chinese Classical
Shanghai/Hong Kong New Style Japanese Classical Western Mah Jong
HKOS Mainland Nanyang Japanese Riichi NMJL Wright-Pat Pusser's Bones BMJA
Guangdong Taiwanese Sichuan Others Singaporean Filipino Malaysian
MCR/ZJ/GMCR HKT SBR

However, this shouldn't be taken too literally. Each variant's evolution has always been cross-cultural. Four examples…

  • Most modern rulesets (barring Mainland Variants) use "All Pairs" and "All Green", which came from Western Mah Jong.
  • Some Taiwanese rulesets use mechanics from both Hong Kong and Japanese rulesets.
  • Guangdong Style was first influenced by Hong Kong, but later became influenced by Taiwanese.
  • The Mainland Variants started as "New Style" Chinese Classical rulesets (with their own quirks), but later adopted the simplified HKOS scoring system.

Also, the jury is out on when the Philippines, Singapore, Malaysia, and Vietnam came up with their variants.
It's relatively safe to say these variants developed during the Chinese mass exodus of 1950-80s.
The million dollar question is: Did these variants develop parallel to HKOS or from HKOS?

The Mahjong Timeline

The following provides a rough timeline of when several popular or influential Mahjong variants were created.

Time Events
1900s Chinese Classical sets the base and eventually spreads worldwide due to commercialization.
1920s Starting in Shanghai, under the umbrella "New Style" more and more winning conditions are added on.
1930s Japanese Classical is born.
1940s Although the NMJL started making "official" American rule cards in 1937, they weren't strictly standardized until the 1940s.
1950s Both Taiwan and the Mainland crack down on gambling. A massive Chinese diaspora occurs. Meanwhile Hong Kong loosens its gambling restrictions. "New Style" continues to split and evolve within Hong Kong. Newly created public gambling houses start promoting a simplified style that uses Chinese Classical's winning conditions, but eliminates Fu. HKOS is born.
1960s Japanese Riichi is born, halting organic evolution in Japan.
1980s Both the PRC and Taiwan lighten restrictions. The new simplified rules re-gain "New Style" winning conditions. Guangdong Style is born. Meanwhile, Taiwanese Style, and a bunch of local Mainland variants are created.
1990s Chinese Official MCR is first released. Sichuan "Bloody" Rules explodes in popularity in Chengdu.
2000s Zung Jung is first released.
2010s Mobile Mahjong Apps spread once-regional variants worldwide. Riichi's popularity explodes internationally.
2020s Tournaments featuring MCR and Zung Jung have ceased. Riichi continues to spread. Mainland variants continue to evolve. Guangdong MCR is released.

The old Mahjong Wiki is gone. The site had become extremely outdated. From the ashes we will give it new life.
Old Mahjong Wiki: Archive

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