Showing all 9 results Default sorting Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low Sale See Details Building Bridges $9.95 – $24.95 Sale See Details Building Dams $9.95 – $24.95 Sale See Details Building Fighter Jets $9.95 – $24.95 Sale See Details Building Race Cars $9.95 – $24.95 Sale See Details Building Rockets $9.95 – $24.95 Sale See Details Building Skyscrapers $9.95 – $24.95 Sale See Details Building Stadiums $9.95 – $24.95 Sale See Details Building Tunnels $9.95 – $24.95 Sale See Details Engineering Challenges (Set of 8) $79.60 – $199.60