Victor Hugo Padilla Jimenez

What Are the Official Mexican Train Rules?

Fast, friendly rules so you can play tonight — no rule fights, just fun.

Short answer: There isn’t one worldwide “official” rulebook for Mexican Train. Most people use the standard tournament-style rules below. If you follow these, you’ll match what most groups call “official.”

What You Need (So You Can Start Right Now)

1 set of Double-12 dominoes (2–8 players). Double-15 or Double-18 works for larger groups.
2–8 players.
Train markers (coins, pennies, paper clips, or little train tokens).
Flat table and a center “engine” spot (a hub is nice, but not required).

Tile Counts to Draw (Quick Cheat Sheet)

2–4 players: draw 15 tiles each
5–6 players: draw 12 tiles each
7–8 players: draw 10 tiles each

(If you’re using Double-15 or Double-18, increase draws a little so everyone still has a good hand.)

Round Order (The Engine Steps Down)

Play in rounds. First round uses the double-12 as the engine in the center. Next round uses double-11, then double-10, and so on, all the way down to double-0. Lowest total score at the very end wins.

Setup (Make Your Train Station)

Shuffle dominoes face down. Everyone draws their tiles (see cheat sheet).
Place the engine (this round’s double) face up in the center. If nobody has it, players draw one at a time from the boneyard until it appears. Return extra drawn tiles to that player’s hand.
Each player will build a personal “train” that starts from the engine and heads toward them.

How a Turn Works (Simple and Speedy)

Play one tile. It must match the open end where you place it.
Where can you play?
- Your own train (always allowed).
- The Mexican Train (always public, open to everyone once it starts).
- Another player’s train only if it’s marked open.
Can’t play? Draw one tile from the boneyard:
- If the drawn tile works, play it right away (still just one tile total this turn).
- If it doesn’t, place/leave your marker on your train to show it’s open. Your turn ends.

Starting the Mexican Train (The Public Track)

On your turn, you may start the Mexican Train by playing one tile that matches the engine. Put a marker on that line or place it in the spot marked “Mexican Train.” From then on, anyone can play on it.

Open vs. Closed Trains (Who Can Play Where?)

Your train is closed by default: only you can play on it.
Your train becomes open when you cannot play and end your turn—place your marker on it. Now others may play there.
Close it again when you later make a play on your own train—remove your marker.

Playing Doubles (Finish the Choo-Choo!)

When you play a double, put it crossways to show it needs attention.
You must then immediately play one more tile (if you can)—on that double’s end or any legal line you’re allowed to play on.
If you cannot play that extra tile, draw one. If it still doesn’t help, mark your train open and end your turn.
Unfinished doubles must be “satisfied.” Play continues with the next player, but the first priority is to cover that double’s matching end. If a player can satisfy it, they do; if not, they draw and, if still stuck, open their train. Priority to satisfy continues until someone covers that double. Then normal play resumes.

Legal Plays (Match the Number)

Every tile must match the open end number where it’s placed (e.g., a 12 must touch a 12).
Branches never change number—each line keeps matching the last open end laid down.
You still only play one tile per turn—unless you just placed a double and are taking the required extra play.

Ending a Round (Two Ways)

Someone goes out: A player uses their last tile—round ends immediately.
Stalemate: The boneyard is empty and no one can play—round ends.

Scoring (Low Score Wins)

At round end, count pips (dots) left in your hand. That is your score for the round.
Add scores across all rounds. The lowest total wins the game.

Common House Options (Pick and Stick)

Must satisfy all doubles before anything else: Some groups require every unfinished double to be covered before any other play happens, even if multiple doubles stack up. (The guide above already prioritizes unfinished doubles.)
Two-tile opening turn: Some groups let you open your train with multiple tiles if they chain; others keep it to one tile. Decide before you start.
Announce “Domino!” Some groups require players to say it when they have one tile left; forget to say it and take a small penalty (e.g., draw one tile). Optional but fun.

Quick Example (See It in Action)

The engine is 12–12. You have 12–10. You play 12–10 on your train. Next turn, you can add 10–something. If you play a 10–10 (a double), you must try to play one more tile right away. If you can’t, draw; if still stuck, open your train. The table keeps trying to cover that 10–10 until someone does. Then play goes back to normal.

Fast Start Checklist (Print-Me Friendly)

Use this round’s double as the center engine.
Draw tiles (15 with 2–4 players, 12 with 5–6, 10 with 7–8).
One tile per turn (unless you just played a double).
Start the Mexican Train with a tile that matches the engine—anyone can play there.
Can’t play? Draw one; if still stuck, open your train.
Cover doubles before moving on.
Round ends when someone goes out or no plays remain.
Count pips; low total wins across all rounds.

Why These Rules Work (Peace at the Table)

These rules are clear, fast, and fair. Doubles don’t stall the game, the Mexican Train keeps play moving, and open trains let friends help (or “help”). Pick your house options once, then play happy all night.