Create a limitless world of people, animals, architecture, robots, vehicles and more with these open-ended interlocking blocks! Each set comprises 12 unique plastic shapes in 6 colors. Curved elements add to the variety and encourage more fluid designs and organic themes. Interlocking pieces connect securely, yet connections are loose enough for a child to separate. Innovative IO Blocks App acts as a virtual build guide – free download included for your smartphone or tablet! 1,000-piece set. Large group activity set includes 20 double-sided Creativity Cards and storage tub Ages 4+