Thames & Kosmos Gecko Run Marble Run Twister Expansion Pack | Toy Model Kit for Creative Marble Runs | STEM Toy for Problem-Solving Skills | Requires Starter Set | Age 8+

I bought this for my grandson's and it is a great success I bought 3 sets put them onto my wall turned out the adults love it just as much. The stickies could be stickier but I used tape to help. Thanks very happy.

Fun but won’t last long with the amount of sticky back tabs they sent. You will need more if you want to use it again.

Bought the expansion pack as well. Highly recommend male or female.

The Gecko Run Marble Run Twister Expansion Pack by Thames & Kosmos is a fantastic addition to the starter set! I placed it on glass, and the nano-adhesive pads worked perfectly—easy to stick, no mess, and completely residue-free. The pieces are well-made and add an exciting twist to the marble run experience. My only complaint is that it didn’t come with enough pieces to fully explore its potential. However, when paired with the starter kit, it’s an absolute hit. I highly recommend getting the full set for endless creative play. Perfect for both kids and adults!

Works best on a window as opposed to a wall.