We've had this run since June and my kids still enjoy playing with it. I bought this for my 5 year old's birthday. He and his friends love it. As for durability - it's about as strong as it gets - I'm not sure what people were expecting. It falls apart from time to time, but it usually happens when they try to build it too tall, or without strategic base piece placement, or when it gets knocked over because they're genuinely passionate about what they're doing. For comparison, if my kids built Lego blocks of the same size and height, they would fall apart too. he falls over. He still likes to play with it, but he needs help. The lack of instructions didn't bother me, but my wife didn't agree at first. Part of the fun is building different tracks and figuring out where the balls will go. It really encourages problem solving, logic, creative thinking and reasoning skills. I wish we had bought a larger set as the kids fight over the pieces. Best for 1 or 2 children. It is made of hard thick hard plastic. It will break before it bends, although we haven't had a single break. I wish it had better storage - the box didn't last long and wouldn't close. All in all one of the best toys we've bought.
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