The 100 blocks of this building set with lengths ranging from 2-10cm are ideal for so many creations. You can build up walls, towers, houses with furniture, castles and so much more. These smaller building blocks are also perfect for table top play where wonderful 2-D and 3-D patterns and buildings can arise or different marble games can be played with alone or together with friends. By building and playing with these blocks, children develop fine motor skills and spatial thinking skills. This basic building block set is a wonderful complement to all of our building sets.