Explore engineering and creativity with open-ended marble mazes. The cubes’ multiple exits give your own designs multiple pathways. Test probability and basic physics when you let the marbles loose! Rocket set has over 260 cubes with tons of stunts and building ideas! Sure to create hours of entertainment, its huge size allows for endless STEAM experimentation with all kinds of possibilities. Includes a guided rocket build that teaches how parts of real rockets work! All Q-BA-MAZE 2.0 sets are compatible.