Vatos 25-in-1 City Project Mecha building block toy set.

This is the Vatos 25-in-1 City Project Mecha building block toy set. The set contains 573 pieces and can be built into a large robot or 12 different city engineering vehicles. Each of the 12 vehicles has two different forms, for a total of 25 possible models. The building blocks are compatible with other major brands. The set is designed to help develop skills in science, technology, engineering, and mathematics (STEM). my kid put half of them together and forgot about it. 6 are still sealed separately