The inventor basic series has been developed for maximizing creativity and imagination. In each set many different models can be created from a wide range of themes, from structures to cars, planes and cranes! The bigger sets also include the 3V geared motor,so children can motorize many of their models. Detailed instructions are included for the major models while secondary models can be assembled by using the free to download internet instructions. All sets can be combined together to create bigger builds, limited only by the child's imagination.