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BUILD YOUR OWN WOODEN PUZZLE BOX - Assemble Tesseract's Secret from precision laser-cut wooden components, then discover how its mechanical locking system works. This 3D wooden model kit combines hands-on construction with an interactive puzzle box challenge for adults and teens aged 14+. 8-STEP ESCAPE ROOM CHALLENGE - After assembly, put your problem-solving skills to the test with 8 unlocking steps and a series of hidden mechanical interactions. This escape room brain teaser offers approximately 60 minutes of puzzle-solving entertainment, depending on experience. SECRET COMPARTMENT FOR SMALL GIFTS - Unlock the concealed chamber inside this wooden puzzle box to reveal a hidden surprise. Use it to present a small keepsake, note or gift, turning an ordinary present into an engaging puzzle experience. Contents for the compartment are not included. INTRICATE GEOMETRIC CUBE DESIGN - Inspired by the symmetrical shape of a tesseract, this mechanical puzzle features engraved patterns and detailed geometric construction. The completed wooden cube measures approximately 7.4 x 7.4 x 8.3 cm and makes a distinctive decorative piece for a desk or shelf. UNUSUAL GIFT FOR PUZZLE LOVERS - Looking for escape room gifts or a challenging puzzle box for adults? Tesseract's Secret combines DIY model building, logical thinking and a hidden-compartment mystery. Designed and manufactured in Poland, it is an original gift for mechanical puzzle enthusiasts.