My Castle sets allow for the creation of custom floor plans with Geomag"s patented system of magnetic steel rods, steel spheres and plastic panels. Geomag Panels consist of highly-colored and brilliantly transparent geometrical forms which can be slotted between the bars and spheres to multiply the possibilities of play! Apply included accessory stickers to make each room and panel unique. Sets included decorated as well as blank panels to draw unique designs that snap into the Geomag panel system. Sets include magnetic steel rods, non-magnetic steel spheres, plastic panels, panel inserts and accessory stickers.