The ROKR Marble Climber Fortress LG504 is a beautifully engineered 3D wooden puzzle that brings motion, mechanics, and creativity together in one captivating build. This DIY marble run features a hand-cranked gear system that lifts marbles to the top of the structure, sending them racing back down in a continuous loop powered entirely by mechanical motion—no batteries or glue required. With 233 precision laser-cut wooden pieces, the Marble Climber Fortress offers a rewarding 6-hour assembly experience. Its intricate track design, steampunk-inspired details, and satisfying kinetic movement make it both an engaging project and an impressive display piece for any desk, shelf, or workspace. Total Pieces: 233 wooden parts Features: Mechanical lift, rolling marble system, hand-cranked motion Assembly Time: Approx. 6 hours Difficulty: ⭐⭐⭐⭐ (advanced) Assembled Dimensions: 25.5 × 22.9 × 20.4 cm Materials: Laser-cut wood Requirements: No glue or batteries Model: ROKR Marble Climber Fortress LG504 Perfect for puzzle enthusiasts, engineering fans, and collectors looking for a unique kinetic sculpture that blends creativity with mechanical design. LAB7 proudly delivers high-quality collectibles across Malta, Europe, and ships worldwide! Whether you're in Valletta, London, New York, or Tokyo — we bring your favourite anime figures and treasures right to your door. Follow us on Facebook, Instagram, TikTok, and YouTube for the latest releases, offers, and collector news!