Top 10 Biggest Mahjong Tourna
-ments
Regular, Online/Offline - 2025 Analysis
Mahjong has multiple versions and ecosystems (Riichi in Japan, MCR/Chinese Official in Europe and China, and regional formats in Taiwan and Macau). Due to gambling restrictions in many jurisdictions, several prestigious events award titles and trophies rather than large cash prizes. Below are the ten most significant recurring tournaments/leagues in 2025, with country/region, typical field sizes, formats, and the best available prize data.
Riichi Nomi Open, Mahjong Soul Official Champion
-ships & Taiwan NT$1,000,000 Finals
8. Riichi Nomi Open (RNO)
· Country/Region: USA (rotating; 2025 West Coast)
· Format: Large-cap Riichi open (Swiss + finals); community prestige event.
· Typical Field Size: Cap 212 players (2025)
· Prizes: US $1,500 guaranteed pool + championship ring/medals.
9. Mahjong Soul Official Championships (Online)
· Country/Region: Global (online; Yostar servers)
· Format: Seasonal team championships and invitational finals (riichi).
· Typical Field Size: Thousands in online qualifiers; influencer/streamer finals
· Prizes: Cash + merch; pools vary by season/event.
10. Taiwan NT$1,000,000 Finals (representative events)
· Country/Region: Taiwan (venues/organisers vary)
· Format: Open qualifiers into a televised/in-person final; ruleset varies (riichi/MCR).
· Typical Field Size: Domestic elites + regional invites
· Prizes: Recent finals list NT $1,000,000 (≈US $31k) to champion; stepped payouts to Top-4/Top-8.
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M.LEAGUE, World Series of Mahjong, World Riichi Championship & European Riichi Championship
1. M.LEAGUE (Championship Playoffs)
· Country/Region: Japan (Tokyo studio; nationwide broadcast/stream)
· Format: Professional franchise team league (Riichi); regular season + playoffs; champions crowned at season end.
· Typical Field Size: 10 pro teams; hundreds of televised matches each season
· Prizes: ¥70,000,000 to the champion team (2025–26 season), with additional team/individual awards.
2. World Series of Mahjong (WSOM)
· Country/Region: Macau (historic venues: Wynn/Venetian)
· Format: Open-entry, multi-day live championship (Zung Jung rules); not strictly an annual event, but remains the cash benchmark.
· Typical Field Size: Hundreds of entrants at peak events
· Prizes: Historic record purse US $1,000,000 with US $500,000 to the champion (e.g., 2007/2008 editions).
3. World Riichi Championship (WRC)
· Country/Region: Rotating hosts (Paris 2014; Las Vegas 2017; Vienna 2022; Tokyo 2025 exhibition; New York next main 2028)
· Format: Invite/qualified world championship in Riichi using WRC rules; four-day festival with side events.
· Typical Field Size: 150–200 players (e.g., Vienna 2022 range)
· Prizes: World title/trophies; prestige over cash due to regulation.
4. European Riichi Championship (ERC)
· Country/Region: Europe (latest: Valencia, Spain, 2024)
· Format: EMA-sanctioned continental Riichi major (MERS6).
· Typical Field Size: 172 players from 25+ countries (2024)
· Prizes: Titles/medals; no large cash prizes.
Open European Mahjong Championship, Global Mahjong Champions League & AMOS FESTIVAL
5. Open European Mahjong Championship (OEMC, MCR)
· Country/Region: Europe (host rotates; last completed 2023)
· Format: Continental championship using MCR (Chinese Official) rules; EMA-ranked.
· Typical Field Size: Typically 160–180 players (e.g., 168 in 2023)
· Prizes: Titles/medals; no large cash prizes.
6. Global Mahjong Champions League – China Finals
· Country/Region: China (national finals)
· Format: Club/team circuit culminating in a televised national final.
· Typical Field Size: Dozens of elite teams from an extensive national network
· Prizes: Reported RMB 200,000 (≈US $27.6k) to the champions (2024).
7. AMOS FESTIVAL (Las Vegas)
· Country/Region: USA (Las Vegas)
· Format: International Riichi open with side events, hosted with Mahjong Stars/AMOS.
· Typical Field Size: International turnout; capped fields by year
· Prizes: 2025: US $10,000 total (cash + vouchers).
OVERVIEW
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