Mexican Train

Mexican Train is a game played with dominoes. The object of the game is for a player to play all the dominoes from his or her hand onto one or more chains, or "trains", emanating from a central hub or "station". The game's most popular name comes from a special optional train that belongs to all players. However, the game can be played without the Mexican Train; such variants are generally called "Private Trains" or "Domino Trains". It is related to the game Chicken Foot.

A double-twelve set of dominoes is marketed as the standard for Mexican Train, and accommodates up to 8 players. Other sets are commonly used as well. The following alternate sets are common, depending on the number of people playing:

In addition to dominoes, the game also requires:

Many sets of dominoes include a station and special train-shaped tokens for markers, and packaged games with a central "station" and custom tokens are available. However, the station piece is not strictly needed, and anything from coins to poker chips to even pieces of candy or slips of paper can be used as markers.

The object of all Trains games is to be the first player to place all of their dominoes. Dominoes may be placed onto the player's train, onto the Mexican train if available, or on the trains of other players under special circumstances.The middle tile counts as the start of your multiple tile train.

At the start of each round, the dominoes are placed face side down, shuffled, and drawn by players to form their hands. Using the double-nine set, players draw dominoes as follows:

Any remaining dominoes are placed to one side, forming the "boneyard".

With a standard double-twelve set the double twelve is placed in the station. In each successive round the next lower double is used until all doubles are used. The double-blank is the final round.

Play continues to the left. Each person lays one legally placed domino per turn, or two if the player's first domino is a double. If they are unable to, they must draw a domino from the boneyard. If they are able to lay that domino, they must do so immediately. Otherwise, their turn is over and play continues to the left, each player trying to place all their dominoes by playing matching dominoes one at a time, end to end.

A train can be as long as the players can make it; it only ends when all dominoes that could match its endpoint have already been played. As a result, trains can become quite long, especially with an extended domino set. It is acceptable to "bend" the train 90° or 180° to keep the train on the playing surface, as long as it does not interfere with the endpoints of other trains.

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Wikipedia