CUBORO® SUB EXTRA SET invites builders aged 7+ to think below the surface. With 12 elements and 3 marbles, these clever half-height blocks create tunnels, overpasses, and hidden routes. As marbles travel through layered paths, children develop spatial thinking, planning skills, patience, and a strategic approach to building. 5 REASONS CUBORO® MAKES MARBLES (AND MINDS!) RACE: A World of Marble Magic: CUBORO® offers 100+ clever wooden elements, letting children and adults experiment, plan, and build endlessly imaginative marble runs with surprising paths. Build Beyond the Blocks: The system expands with Grimm’s wooden rainbows, blocks, balls, and other building elements, plus Billes & Co. glass marbles—check sizes first! Learning Through Play: Designed to boost creativity, logical thinking, spatial skills, STEM understanding, sensory processing, fine motor skills and focus through play. Challenge for Every Age: From simple surface tracks to intricate tunnels, the system grows with children and continues to challenge teens and adults as skills evolve. Timeless Wooden Wonder: With simple wooden cubes and thoughtful craftsmanship, these elements offer a classic design that can be explored, enjoyed, and passed down for generations. Please Note: CUBORO® is dedicated to keeping play and building safe for little hands by ensuring every wooden block is 100% natural — untreated and toxin-free. Slight variations in block size, grains, and colours reflect the authentic quality of natural materials and Swiss handmade craftsmanship — not defects.
