EXPANSION SETS: Add on with our Expansion Sets for even more fun. Build a royal fortress with the Oggs Castle Expansion Set, or race in action with the Drop N Jump Racetracks Expansion Set. The More Squares and Edge Frames Expansion Set gives you more ways to build. Doodle to your hearts content with the More Paperboard Expansion Set. STEAM Learning: Squaregles implicitly requires the application of science, math, design, and technological thinking for building. The paperboard panels incorporate arts and crafts, and storytelling is elevated with Oggs and their gadgets. STRONGER MAGNETS and HIGHER QUALITY:The large magnetic tiles click together and stay together. These strong magnetic tiles for kids were specially designed to work alongside the other toys in your playroom. All toys and kids are invited to play! Ages: 4 Yrs+