Table Rules

Agreed-upon variations and local conventions that players establish before starting a game. Table rules cover payment amounts, penalties, optional rules, and other details not specified by the official NMJL rules.

What Are Table Rules?

Table rules are the supplementary agreements that a group of players establishes before beginning a session of American Mahjong. While the National Mah Jongg League publishes official rules that govern how the game is played, how tiles are dealt, how calls work, what constitutes a valid hand, many practical aspects of the game are left to individual groups to decide. These locally determined conventions are known as table rules, sometimes called house rules.

Table rules exist because the official NMJL rules intentionally leave certain details flexible. The NMJL sets the framework for gameplay but recognizes that different groups have different preferences regarding money, penalties, pace of play, and social norms. A group of close friends playing casually on a weeknight may use very different table rules than a competitive tournament or a weekly game at a community center.

The most important principle of table rules is that they must be agreed upon before the first tile is dealt. Introducing new rules mid-game or mid-session creates confusion and conflict. Experienced players ask about table rules as soon as they sit down, especially when playing with a new group. There is no shame in asking, it is expected and appreciated.

Common Table Rule Variations

While every group is free to create whatever rules they like, certain table rules appear frequently enough to be considered standard variations. Here are the most common areas where table rules come into play:

Payment and stakes:

• Bet amounts, Groups decide how much each point is worth. Some play for a penny a point, others for a quarter or a dollar. Some groups play with no money at all, using chips or simply tracking scores.
• Payment structure, The standard NMJL rule is that the discarder who throws the winning tile pays the winner double, while the other two players pay single. Some groups modify this, for instance, requiring all three losers to pay equally regardless of who discarded.
• Pie (bonus payment), Some groups add a small bonus payment from each player when someone wins by self-draw or completes a particularly difficult hand.
• Table minimums, Some groups set a minimum hand value for winning, requiring players to pursue hands worth at least a certain number of points.

Penalties and enforcement:

• Dead hand penalties, When a player's hand is declared dead (due to an incorrect exposure, wrong number of tiles, etc.), some groups impose a financial penalty. Others simply require the player to continue playing without the ability to win, paying whoever does win.
• Miscall penalties, Calling "Mah Jongg" incorrectly is a serious error. Table rules determine the penalty: some groups require the false caller to pay all players a set amount, while others declare the hand dead and continue.
• Pace of play penalties, Some competitive groups enforce time limits on turns. A player who takes too long may face a small penalty or be required to discard immediately.

Optional gameplay rules:

• Atomic hands, Some groups allow a player to declare a special win if their dealt tiles (before the Charleston) already form a complete hand. This is not an official NMJL rule but is popular in some circles.
• Multiple Mah Jongg, When two players could claim the same discard for Mah Jongg, the standard rule gives priority based on seating position. Some groups modify this based on hand value.
• Joker exchange timing, The standard rule allows joker exchanges only during a player's turn. Some groups allow exchanges at any time.
• Courtesy pass rules, Some groups make the courtesy pass mandatory rather than optional, or set a fixed number of tiles that must be exchanged.

NMJL Rules vs. House Rules

Understanding the distinction between official NMJL rules and table rules is important, especially for players who move between different groups or participate in tournaments.

The NMJL publishes a set of official rules that cover the fundamental mechanics of the game: the structure of the wall, the dealing procedure, the Charleston sequence, how calls and exposures work, what constitutes a valid Mah Jongg, and the basic scoring and payment system. These rules are considered the standard for American Mahjong and are used in NMJL-sanctioned tournaments.

Table rules should not contradict the fundamental NMJL rules, they should supplement them. For example, a table rule might specify the dollar amount per point (which the NMJL does not dictate), but it should not change the basic rule that a player needs 14 tiles arranged in a valid pattern from the card to win.

However, in practice, some groups do play with modifications that deviate from official rules. This is perfectly acceptable in casual settings as long as everyone agrees. Common deviations include:

• Allowing tiles to be rearranged on the rack during play (officially tiles should not be rearranged once play begins, though many casual groups ignore this)
• Modifying the Charleston sequence (some groups play with only one Charleston instead of two)
• Relaxing the rules about announcing tile names when discarding

When joining a new group, it is wise to ask: "Do you play by standard NMJL rules, or do you have any house rules?" This simple question prevents misunderstandings and shows respect for the group's established practices.

For tournament play, table rules are typically standardized by the tournament organizer, and all players are expected to follow the official NMJL rules unless the tournament explicitly states otherwise.

Agreeing on Rules Before Play

The process of establishing table rules should happen naturally before the first game of a session. Here are best practices for this conversation:

• New players should ask, If you are joining a group for the first time, ask about their table rules before sitting down. Most groups will volunteer this information, but asking shows good etiquette.
• Hosts should explain, If you are hosting or organizing the game, proactively explain your table rules to all players, especially newcomers.
• Write them down, Groups that play regularly benefit from having a simple written list of their table rules. This prevents disputes and makes it easy to onboard new players.
• Be flexible, When playing with a mix of players from different groups, be willing to compromise on table rules. The goal is to find common ground that everyone is comfortable with.
• Don't assume, Even experienced players should not assume that their table rules are universal. What seems like "the way Mahjong is played" in your group might be a local convention that other groups handle differently.

Disputes about rules during a game are disruptive and unpleasant. The time to resolve ambiguity is before the first tile is dealt, not when a contested situation arises mid-game. If an unexpected situation does come up during play, handle it with grace: discuss it briefly, reach a consensus, and apply the agreed interpretation consistently going forward.

Remember that table rules exist to make the game more enjoyable for your specific group. There is no single "correct" set of table rules, only the set that works best for the people at the table. The hallmark of good table etiquette is respecting whatever rules your group has agreed upon, even if they differ from what you are used to.