Each piece measures approximately 1 1/8 in x 1 1/4 in / 3 cm x 3.3 cm
Warning! The instructions and packaging are in German.
This game has 18 triangles in the colors red, yellow, green and blue. The instructions tell you to place the pieces together like the shapes given in the instruction book.
This is not as simple as it seems as the pieces have different ways to snap into the next piece. For example there might be a square hole instead of a round hole on the next piece.
