Tenhou.net

Tenhou.net

Tenhou.net banner
Publisher	C-EGG
Developer	C-EGG
Platform	PC/Browser
Year	2007

Tenhou 「天鳳」 [1] is the one of the most popular online mahjong services in Japan. It offers the game through either as a free web based platform and/or as a downloadable program via subscription.

Basic user guide

Tenhou.net is a Japanese site, with limited English support. There are translation add-ons (for English and French) available for Chrome and Firefox, which translate the interfaces for game play, registration, preferences and statistics.

Game lobby

The game lobby gives players access to game rooms, with number of rulesets to play with. Here, players have access to the different game rooms and player statistics.

Game interface

Riichi	Chii	Pon	Kan	Ron	Tsumo
リーチ	チー	ポン	カン	ロン	ツモ

Most clickable options are near the bottom of the screen. The rest is dedicated to the discard piles, the wall, and other player's hands. In the center, a square display shows the round wind, seat winds, riichi bets/honba, # tiles left, and player names.

Replays

Tenhou.net replay links shown.

Replays can be accessed via the menu labelled LOG. In the website version, only the most recent 30 games are automatically stored within the system, though it is possible to save logs permanently by copying the link and saving it elsewhere (in tenhou.net/3, right click the given log to save the link). In the downloadable client, the settings can be changed so that all replays are saved without limit.

Spectating

Players may use the interface to spectate games, though the games are delayed by 3-5 minutes (to eliminate cheating). Players may spectate Houou lobby games.

Interfaces

Tenhou.net is playable via various interfaces. All of them provide access to the main server, complete with access to the game's player base and statistics.

App

A mobile app is available for Android in Google Play and iOS via the App Store. The app is merely a browser frame that actually uses the /3/ web interface.

Client

Main article: Tenhou.net client

The Tenhou client is a downloadable application provided by Tenhou.net. However, it cannot be used without paying a subscription fee. The client application uses the same menus as the browser version, but it also has added features not available on the browser version.

Web (Regular)

An HTML-5 based interface, available at https://tenhou.net/3/. Free for all users and rooms.

Web (4K HD)

A higher quality version of the /3/ interface, available at https://tenhou.net/4/. It provides HD textures, a 3D-like tile display, and official (albeit partial) localization into many languages. Similar to the Windows Client, it can only be used to play in the Ippan 「一般」room, unless one pays the premium subscription fee.

Flash

This interface no longer exists, but was the primary way to access Tenhou for many years before Flash became obsolete.

Game rooms

Main 0000 lobby, with the tabs for the four rooms indicated by a red box.

For Tenhou ranking, the game lobby is divided into four sub-rooms, with specific qualification standards.

• Ippan 「一般」

General lobby area. Any player ranked below 4-dan and R1800 can play here, including new players and unranked players. The mix creates a somewhat chaotic game environment, where skilled and unskilled players alike play each other.

• Joukyuu 「上級」

Lower "dan" lobby. Available to players ranked 1-kyuu or higher. Also available to anyone who has paid for a premium subscription.

• Tokujou 「特上」

Upper "dan" lobby. Available to players ranked above 4-dan and R1800. The lobby consists mostly of 5-dan and 6-dan players all pushing to get into the highest lobby.

• Houou 「鳳凰」

Reserved for only the highest ranked players in Tenhou.net of rank 7-dan and R2000.

Custom rooms

Main article: Tenhou.net custom rooms

Tenhou.net offers users the ability to play in custom rooms. Here, players may play unranked casual games, without any worry about their Tenhou.net ranking.

Tenhou.net house rules

Main article: Tenhou rules

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.

The most important rules to note:

• Uma 「+20 / +10 / -10 / -20」
• Atozuke ari
• Kuikae nashi
• Kuitan ari or nashi option
• Every yakuman counted as single yakuman, yet they may be combined for multiple yakuman
• Pao rule applied to yakuman, but not rinshan kaihou
• Seat wind tiebreaker

Ranking system

Main article: Tenhou.net ranking

The ranking system employs a rating ladder, with two different forms of ranking:

• Rank: Increases when 1st/2nd, and decreases when 4th. Every time rank increases, the 4th-place penalty increases.
• Rating (R): An Elo system - this increases when winning and decreases when losing, taking into account other player's R rating (players gain more/lose less against higher R players).

Player statistics

Main articles: Nodocchi.moe and Tenhou ranking tool

Third party tools have been developed to give anyone access to player game histories.

Contests

Main article: List of Tenhou.net events

Tournaments

Tenhou's loading screen, advertising two competitions.

One of the site's features involve tournament lobbies. Players can host their own tournaments and customize tournament rules. Throughout the course of the year, various tournaments are advertised via the game's waiting screen.

International team competition

Main article: International Online Riichi Mahjong Competition

External links

• 天鳳_(オンラインゲーム)

Tenhou.net in Japanese Wikipedia

• Comprehensive English documentation
• Tenhou manual
• Custom lobby
• Official blog
• Osamuko beginner's guide to Tenhou
• xkime's disclaimers about Tenhou
• Tenhou ranking levels

Tools

• 天鳳牌譜解析
• Overall ranking tables
• Yaku frequency
• tenhou-english-ui-Extension that changes the UI text on the Tenhou Web Client to English