• Title: International Online Riichi Mahjong Championship
• Date: Qualification Nov.7th, Team Final and Individual Tournament Nov. 14th
• Time: UTC 11:00 AM
• Participants: 4 players per country

Participating nations:

 ARG: Argentina
 AUS: Australia
 AUT: Austria
 BRA: Brazil
 CAN: Canada
 CHN: People's Republic of China
 FRA: France
 GBR: Great Britain
 HKG: Hong Kong, China
 INA: Indonesia
 JPN: Japan
 KOR: Republic of Korea
 RUS: Russian Federation
 SGP: Singapore
 SWE: Sweden
 TPE: Chinese Taipei
 UKR: Ukraine
 USA: United States of America
 VIE: Vietnam

Cooperation

• Argentinian Riichi Mahjong Club / Argentina / https://www.instagram.com/clubarg.riichimahjong/
• Australian Riichi Mahjong Association / Australia / https://riichimahjong.com.au
• Austrian Riichi Mahjong Association / Austria / https://riichimahjong.at/information/
• Brazilian Mahjong Association / Brazil / http://mahjongbrasil.com.br/
• Federation Francaise de Mahjong / France / https://www.ffmahjong.fr/FFMJ-site/index.php
• Hong Kong Riichi Mahjong Club / Hong Kong / https://bit.ly/3dSg2Wu
• Mahjong Kingdom(麻雀王国) / Japan / https://mj-king.net/
• North American Riichi Mahjong Association / Canada, USA / https://www.nariichi.org/
• Riichi Indonesia / Indonesia / http://riichi.id
• Riichi Mahjong Club "Tesuji" / Russia / http://tesuji-club.ru/en/
• Sport Mahjong Club Riichi Maajan / Singapore / https://sgriichimahjong.com
• Taiwan Riichi Mahjong Group(臺灣日本麻將同好會) / Chinese Taipei /
• https://www.facebook.com/groups/twjmj/
• Team GB / Great Britain
• Tempai / Ukraine / https://www.facebook.com/groups/tempai/
• Vietnamese Riichi Mahjong Club / Vietnam / https://www.facebook.com/VietnameseMahjongClub/
• 牌友之家 (Card Fans) / People's Republic of China