This 100 piece set is a wonderful way to get started building simple, small structures that's just a step up from the 52 piece set. Build low and twice as wide, or stack them twice as high and narrow. Whatever your preference, the Citiblocs 100 piece set will keep the beginning builder flexing his or her imagination while developing fine motor skills. You can expand your building horizons by adding additional sets including the 52, 300, 500, 800 and even 1,000 piece sets! All Citiblocs Wooden Building Sets are compatible and interchangable with each other.