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

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