My son got this as part of his permanent STEM subscription. It is much more difficult and reliable compared to other "marble routes" with many different plans that you can work out or end up doing yourself. My 8 year old son loved it but the biggest problem was that the instructions weren't always the clearest. I'm in my early 30s but there were times I helped him and used to make mistakes because the charts weren't the best. Suffice it to say my eight year old son is not very confident that he can do it on his own. Overall this is a nice toy/educational tool but I think the stated age range might be a bit low. But a very cool toy!
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