This building set comes with 13 double-sided learning blocks and 69 non-electronic building pieces, including an electronic Smart Star™ cube. Insert the learning blocks into the interactive Smart Star™ cube to learn about colors, shapes and objects. Inspire open-ended creativity and stacking fun with all the pieces. Simply put a Learning Block from another LeapBuilders® set into the interactive Smart Star™ Cube to see flashing lights and hear learning phrases and short tunes (additional sets sold separately).   Please note, blocks from sets in different languages have unique audio responses and cannot be used interchangeably.