On your turn, take all tiles of one color from a factory or the center. If you take from the center first, you also take the first-player token (counts as a floor penalty).
Place tiles into a single pattern line. If the line is full, one tile moves to the wall during tiling. Extra tiles overflow to the floor.
Scoring happens during wall tiling. Adjacent tiles score by line length horizontally and vertically. Floor tiles apply penalties.
The game ends when any player completes a full row on their wall. Final bonuses apply for rows, columns, and complete colors.