Kids develop STEM skills fit for kings and queens every time they build with this set. Supports multiple build-it-yourself castle designs - kids can add a bridge, stack up a tall turret, or design an open courtyard. Also features 10 double-sided activity cards filled with interactive challenges designed to boost critical thinking, problem-solving and early engineering skills: Can you lower the drawbridge, build a working catapult, or trigger the surprise trapdoor? Comes with two knight figures and a trusty horse that's ready to set off on any fantasy quest your kids can dream up. 123 pieces, for ages 5 and up.