Playstix is a great toy that allows you to build both the ordinary and extraordinary. Build a variety of models right out of the box with no need for additonal or specialized parts. Each Playstix piece has grooves that interlock when one piece is placed across another. Once you've mastered your building skills, you'll want to explore the possibilities - think of a creation, then build it! A great idea booklet is included. 221 pieces. Ages 4+.