Basic Set is a subtheme of Duplo that consists of 5 sets that ran from 1969 to 1998. Most sets were released in 1970 which accounted for 2 sets. As of today, the average annual growth of sets in Duplo Basic Set is approximately 8.4% per year.
The LEGO DUPLO Basic Sets, released in the 1970s, are foundational sets designed to introduce young children to the basics of building with larger, easy-to-handle bricks. Notable sets include "Building Set" (511), which contains a variety of basic bricks and elements for freeform construction; "Building Set" (513), which offers a more extensive collection of bricks and accessories for more complex builds; and "Building Set" (512), which provides an intermediate selection of bricks for versatile building options. These sets aim to develop fine motor skills and encourage creativity and imaginative play in preschool-aged children.