There's just one rule: each piece you play must touch at least one other piece of the same color, but only at the corners! It takes less than a minute to learn but has depth to challenge your whole family. Each player gets a set of 21 pieces - red, blue, green, or yellow - then takes turns placing them on the board. The goal is to fit the most pieces on the board. The game ends when no one can place any more pieces. Everyone counts the squares in their unplayed pieces and the player with the lowest score wins!