Tenhou.net

Tenhou (天鳳, tenhou.net) is the one of the most popular online mahjong service in Japan. It is also the platform of choice for the English-speaking community.

Development history

2006/02/20 Hanjyukusou (半熟荘) beta released
2006/08/01 Came out of beta
2006/10/24 10,000 IDs registered
2007/01/20 Changed name to Tenhou
2007/12/25 100,000 IDs registered
2008/02/01 Windows client released
2009/02/20 Houou table opened
2010/08/22 1,000,000 IDs registered
2012/06/09 10,000 concurrent users
2013/07/10 2,500,000 IDs registered

Basic user's guide

Tenhou.net is a Japanese site. So, anyone, who is not familiar with navigating Japanense sites, may have some difficulty.

Game lobby

Game interface

Game rooms

Tenhou.net house rules

Rules of play

The site specifies a number of specific rules. While many general rules and procedures still apply, a number of rules for the game overall may be deemed as "optional"; and they may not apply elsewhere.

Ranking system

External links

Tools