My son received this as a gift and plays with it almost every day! We decided to gift it to a friend based on how enjoyable it’s been for my own children.My daughter is 5 and plays with this set almost every day. She even finds YouTube videos that show how to make certain shapes and buildings. She gets better at it the more she uses them.Sticks are a bit thinBoth my daughter and I love the magnetic structures we can build enough so that another family member bought another set for her. We all hate that it was lacking shipping packaging. Because both sets were shipped without sturdy packaging the toy's boxes split open pieces were lost from both purposes. Seller merely taped up the set's edges. I blame the missing pieces on the seller and their poor choice of shipping materials. I will be buying more of this set but not from this seller. I post this because the seller will not change their attitude about shipping until their customer base demands it.My daughter loved it. She began constructing simple structures. Then, she follow the more complex structures shown in the box.Kids (and adults), need to use their brain to imagine and design things in a 3D physical and mental environment.Remember how the 1950s toys similar to this, helped millions to develop several physical and virtual skills.Very recommended. Adults can also enjoy constructing and exercising the brain.He loves it and wishes to add more piecesGreat value for the money and it’s well madeWhile I have absolutely no complaints about this product, I was disappointed that it was shipped without being packaged inside another box. It's hard to give a gift that has shipping stickers all over it.I don't know where and how to contact the seller. I bought it back in May of 2021 and right afterwards it said "currently unavailable" and coincidentally today I checked and it happened to be back in stock, which means I'm able to write this review.I bought it as a gift for my son and all the magnet STRAIGHT stick and ball pieces were included the things that are MISSING, and for my son is the most important (he is still upset about it), ARE the 8 curved stick pieces and all 70 window accessories.I'm really hoping the seller sees this review and reaches out and sends me those missing pieces. I think they should because I paid A LOT of money for it, and to have all those many pieces missing from it, is simply ISN'T FAIR.Other than the missing pieces, it's an amazing set, the magnetic balls and sticks work well and quite entertaining to play with. Well made.