The Rules category lets you change the rules of the game: e.g., the number of rounds, the use of extra tiles, claiming rules, etc. The options on other than the introductory page (which lets you customize the rule descriptions displayed on the upper part of the Rules tab) are saved in the rule presets and can be edited only when a user-defined or customized rule preset is activated and there is no game in progress. The category consists of an introductory page and four option pages:
Using five sets
Number of rounds
    Round wind sequence
     Dead Wall
    Charleston
    Specifying how discards are placed on board
    Using extended discard information
    Flowers and Seasons
    Dora tiles
    Jokers
    Omit Bamboo tiles
Passing the deal after
    East's win
    Minimum points
    Maximum number of Chows
    Prohibition of mixed suits
    Require special hand
    Exceptions
    Passing deal after a draw
    Paying points after a draw
    Play Goulash after a draw
    Dead hand rules
Claiming of Chows
    Claiming of pairs
    Over-claiming
    Sacred discard
    Missed discard
    Kuikae
    Competitive claims
Related topics:
Creating and managing custom rule presets
Preferences  Overview
Preferences  User Interface
Preferences  Players
Preferences  Scoring