The object of Mexican Train is to be the first player to place all dominoes drawn at the start of a round. Dominoes may be placed onto the player's train, onto the Mexican train, or on the trains of other players under special circumstances.
Mexican Train is a domino game for 2 to 8 players usually played using a double twelve domino set. With 2-4 players, 15 dominoes each are drawn; with 5-6 players 12 dominoes each are drawn and with 7-8 players 11 dominoes each are drawn. The dominoes are placed face side down and the dominoes are then drawn. Each player also chooses a colored marker used to designate their 'public' train, and the black marker is set aside to use with the Mexican train.
The player with the highest double starts the play. If no one has a double, players draw in turn until one is found. This player opens the station by placing this double in the center as the engine, then starts their own train on one of the eight sidings of the station by playing a domino that has one half matching the central double domino. Each subsequent player follows suit. Any player that is unable to play must draw a domino, which may then be played if one half matches the central domino.