Draw is the most widely played dominoes variant, and the one most people mean by "dominoes". Its defining rule is simple: if you cannot play, you keep drawing from the boneyard until you can.
A standard double-six set has 28 tiles: every pairing of two numbers from blank to six, with no duplicates. A tile showing the same number twice, like 5|5, is a double.
The tiles nobody was dealt sit face down in a pile called the boneyard. In a four-player game dealt five tiles each, twenty tiles go out and eight stay in the boneyard.
The first double played becomes the spinner. It is laid crosswise, and once both ends of the main line have grown, the chain can also branch off its two sides - so the layout can have up to four open ends instead of two.
Play a tile that matches a number at one of the open ends. If you cannot, draw from the boneyard and keep drawing until you find a playable tile. Only when the boneyard is empty and you still cannot play do you pass.
A round ends one of two ways:
The winner of the round scores the pips still held by every other player, added together and rounded to the nearest multiple of five. Rounds repeat until someone reaches the target score, usually 100.
