Put on your crown and build a castle and more with 30 sturdy Leap Builders blocks including an electronic Smart Star cube that combines block play and learning content. Build a castle and more using 30 blocks. Include the electronic cube in all your creations to trigger 90+ playful sounds and phrases about shapes and instruments. Includes 10 double-sided learning blocks that, when inserted into the interactive Smart Star trigger different sounds and phrases. Press the music button to hear four learning songs and five melodies. Press the question button to hear learning phrases and requests to find specific blocks in the set. Build on top of the Smart Star cube to trigger fun sound effects.