Playing
Play a matching tile to the left or right end of the run. If you cannot play, you must draw a tile. If the drawn tile can be played, go ahead and play it. Otherwise, you must pass.

Scoring
A round ends when one of the players runs out of tiles, or there are no more matching tiles to play. Each point left in your hand counts against you. The game ends when a player reaches 100 points.

Winning
The winner is the player with the lowest score at the end of the game.