Magna-Tiles are the original 3D magnetic building tiles by Valtech since 1997. This is an expansion set. If you don't already have Magn-Tiles we receommend you start with the 32 or 100 piece set. Each tile edge is magnetized so you can connect them to build anything you can imagine. If you can click it, you can create it! Not only are Magna-Tiles fun, but they also help develop fine motor skills as kids stack, build, count, match and "click" together their creations. All original Magna-Tiles building sets are compatible. Tag your photos on social media with #magnatiles to be featured!