riverdrift says
Dominoes are played so that the touching ends match in number.
4 dominoes each are dealt to the 4 players.
If a player is unable to play to the layout he passes that turn.
Sometimes you have to pass at the start of the game.
The winner is the first player to run out of dominoes.
For the loser the remaining face numbers are added to their points.
The total loser is the player with the most points.