NMJL Rules
All National Mah Jongg League rules apply.

Standard Scrambles
Every Standard Scramble match has four games, with each player East once.

Social vs. Focused
All matches use the same rules. Social matches have a more relaxed pace expectation. Focused matches require a faster pace.

School Scrambles
School Scramble matches consist of two games. East is determined by dice before each game, with the highest roll becoming East. School Scrambles do not award the +5 proposer bonus. All other Dragon Scramble rules apply.

Prizes — Overall Leaderboard
Prizes are awarded to the top three players in each of the two overall rankings: Total Points and Average Score.

Prizes — City Leaderboards
Each city with more than 20 players participating in the Scramble will award one prize to the player with the highest Total Points in that city. The city of the overall Total Points winner is excluded from the city prizes.

Proposer Responsibilities
The current match proposer provides the Mahjong tiles, mat, racks and dice. If the proposer leaves an open match, proposer responsibility transfers to the next player who joined.

Charleston Passing
All four players must place their tiles on the mat before anyone picks up incoming tiles.

Phones
Phone calls are not permitted during matches, without exception. If necessary, players may briefly send text messages, provided this does not interrupt the flow of the game. Phones must remain below table height during play. AI tools and any other electronic assistance are strictly prohibited.

Notifications
All phone notifications and ringer sounds must be turned off during play, as a courtesy to other players and to encourage everyone to stay present and focused on the game.

Points
The winner receives the NMJL hand value shown on the card.
Wall Game: Each player with a live hand receives +10 points. No other points are awarded for that game.
Average score is calculated and displayed after a player completes at least four matches.

Bonus Points
Self-picked Mahjong (last tile drawn from the wall) = hand value ×2.
Jokerless Mahjong = hand value ×2 when eligible.
Self-picked + Jokerless = hand value ×4.
Singles and Pairs hands are not eligible for the Jokerless multiplier.
Standard Scramble proposer at match completion = +5 points.

Penalties — Dragon Scramble House Rules
False Mahjong: If a player calls False Mahjong and more than one other player exposes their tiles before the line is checked and found erroneous, the remaining player with a live hand receives +25 points, and the player who called False Mahjong receives −25 points. The proposer must inform Admin.
Misnamed Tile: If a player calls Mahjong on a misnamed tile, the player who misnamed the tile receives a penalty of −2 times the value of the Mahjong hand made by the player who successfully called Mahjong. The player who called Mahjong receives the normal value of their hand.
Late Arrival: If a player is 20 minutes or more late and the other players cancel the match, the late player receives −25 points and each of the other players receives +25 points.
Late Withdrawal: Withdrawing less than 24 hours before a match, resulting in cancellation because no replacement joins = −20 points.
Dead-Hand Challenge: If a player contests a challenge, the hand is checked at the end of the game. If the hand is dead, the challenged player receives −25 points. If the hand is valid, the player who made the challenge receives −25 points. No penalty applies if the player accepts the challenge.

Lulu IV — Dummy Player
When a match has been proposed more than 24 hours in advance and only three players have joined, the proposer may ask Admin to add Lulu IV as the fourth player.
Fourth game: The fourth game is not played. It is recorded as a win for Lulu, worth 25 points.
Charleston: If Lulu passes Jokers during the Charleston, players keep those Jokers.
Back-to-back matches: Players may choose to play up to two consecutive matches with Lulu.

Emergencies
A match counts only if at least two games have been completed. If an emergency interrupts a match after at least two completed games, any remaining unfinished games become Wall Games, worth +10 points to each player. If fewer than two games have been completed, the match is cancelled and no points are awarded to any player.