JOYIN 170Pcs Glowing Marble Run, Construction Building Blocks Toys with 5 Glow in The Dark Glass Marbles, STEM Educational Building Block Toy(120 Plastic Pieces + 50 Glass Marbles)

My two girls, 6 and 2.5, both enjoy this. Obviously the younger one doesn't catch on much and builds a pretty straight tower but the 6 year old enjoys trying to create new masterpieces.One night, I decided to surprise my oldest and do my best to recreate the picture/example in the pamphlet that uses all the pieces (she had been trying to make the biggest one possible) I ended up on the floor playing with this thing for MUCH longer than I care to admit haha.The pamphlet/example book is less than stellar, there's whole sections of the run that you can't really see in the picture, so you just kind of guess - there's also only a few examples, which stinks if you have a kid who really likes to recreate.We had originally purchased one from a different store but it seemed flimsy and didn't stay together very well. I searched Amazon and found this one, it cost a few dollars more and came with a significant amount of additional pieces. We boxed up the first one, returned that and ordered this one. Some of the pieces don't stay together the best but it's not a huge deal at all.We really like it, hours of fun for kids (and adults) of all ages.

It took me 3 hours to finally get it right (the expert course using all pieces). The instructions are useless, so you have to go by the box. The problem is that both instructions and box picture are not at an angle, so it is difficult to see whether you have a straight piece or curved piece. Also, some of the colors of the pieces don't match the box, such as the figure 8 coaster track. When you finally get it all together, you have to do a final run to insure that the ramp pieces send the marbles in the right direction, and that the pass through vs marble blocking sides of each piece are oriented correctly. Also, it will easily come apart if he tries to lift it or touch anything besides the marbles. That being said, it is fun to watch and fun to watch the kids play with it. That's the bottom line.

What a wonderful Marble Run my son just enjoys it so much I bought the 150 PCS set.

Love all the possibilities and the glowing marbles are great! Love that it came with a light to help illuminate them!The issues are that some of the base pieces that require 2 pieces won’t stay together even in the part that’s supposed to keep them together (sorry, it’s hard to describe) I just used rubber bands to keep them from falling apart. The instructions are crazy! It is construct by pictures and it is not done piece by piece. (At least for the one that uses all of the pieces). It does fall apart pretty easy so…Just know that if you do actually get it all together and you’re very proud of yourself, it probably won’t last long with a 2 year old around, even if said 2yo is careful. And good luck getting it back together. Best to have a great imagination or not be OCD. If you are OCD patience is a must.

Love the quality & fun for the kids, Works great & very sturdy!

He has currently been playing with it for two hours...and counting. Endless possibilities.Was a little overwhelming to put together at first, but once you mess around with it for a min it's pretty easy to understand.

I bought this marble run set alongside another Joyin marble run; the two sets use different size marbles and tracks, so the sets are not compatible. Of the two, this set was inferior in quality, joints falling apart more easily and difficult to move while built. The instructions were also far inferior to the other set; this one had a few simple pictures as steps, but the other set showed pieces per step and greyed out all the previous step pieces for ease of understanding. The tall pair of base-stand pieces (pictured) consistently fell off the build as the two pieces did not attach to one another. Since a similar piece in the other Joyin set stays together even while not inserted into another piece, this set feels more poorly fabricated or designed. On the good side, this set comes with plenty of marbles, has exclusively see-thru translucent pieces, is a larger size than the other set once constructed, and this set offers good versatility in alternate designs. After a few days of play for 3-8 year olds, this set was fully deconstructed by regular play, the main tradlwback being the looseness of the joints. Overall not bad, but the same brand offers better sets.

My partner is an architect. These are his new favorite pass time