Where were the engineers for this toy, is what I'd like to know. What a great idea it is, but it just doesn't hold up to play. Now, I suppose if you're willing to bolt it into your basement wall, then it would hold up to some strong playtime. However, it is almost completely incapable of withstanding any play whatsoever without collapsing onto the floor. I highly recommend you read all the other reviews on this toy prior to purchase. Definitely needs to go back to the drawing board - ours went back to the store! What a disappointment!