LOGIFACES is composed of a set of prisms, each with different top angles, hand-poured from concrete. The idea is simple; arrange the 3-D triangles next to each other to build a continuous surface. Boost your creativity, use them as a meditative tool, and challenge your mind while you form a design that can take on millions of variations. LOGIFACES can be played alone or with friends. The 16-piece game set contains 11 different types of prisms of varying height in three colors.