National Geographic Marble Run with Motorized Elevator - 95-Piece Marble Maze Kit with Motorized Spiral Lift, 20 Marbles, Perpetual Motion Machine, STEM Gifts for Boys and Girls, Kids Physics Toys

I ordered this for my 4, 6, and 8 year old grandchildren for Christmas. Each age child has different skill sets for building marble runs but they all spent the better part of Christmas Day playing with this great toy. They especially love building a constant motion marble run using the battery powered screw lift which is so clever. There's one little quirk about the screw lift; you have to press all the clear tubing pieces together really well to make sure the screw will pop the marble out of the top of the tube. Once you figure that out there are hours of fun for children and adults helping children play with this great toy. Very highly recommend getting one with the screw lift. Very easy to assemble and play with right out of the box.

Christmas gift for a 6 1/2 year old and 4 1/2 year old. Big hit. They take it out often. It's pretty dang cool and so many different ways to build stuff. The younger one is learning from watching her older cousin. Highly recommend.

Kids love the marble “ladder” that continues the marbles moving through the course. Great STEM activity for all ages!

Made of hard plastic, while playing with my kids, I feel that some of the pieces are easy to break if not handled gently. Most pieces fit together well, but some like the elevator require lots of force. While taking the set apart, I cracked a line in one of the clear elevator pieces trying to take it apart.

its sat in the box for a month, but kids instantly perked up when they opened the box and put it together. THEY LOVE THE MARBLE RUN ! its a cool toy

My 5 and 8 yr old actually play nice playing with this toy.

Got for a christmas present for 5 year old nephew it was loved by all

Great quality set. Wish there were more of main pieces to built with though.