(from the back of the box) An exciting game which is also both amusing and instructive. The game commences by turning up a pattern card. Each player then attempts to form a mirror image of the pattern using 2 bricks and a mirror. The first to succeed wins the pattern card. The player collecting [the] most pattern cards wins the game. Using the mirror can be tricky, and an understanding of the symmetry of a pattern is an advantage in the game.