Match a tile to either open end of the line. If a tile fits both ends, choose the side. Can't play? Pass (or draw from the boneyard in Draw mode). First to empty their hand wins; if the game is blocked, the lowest pip total wins.
4 players, 7 tiles each, no drawing. Play Block Dominoes (Gaple) free in your browser — no download, no sign-up, on phone or computer.