Quite honestly, if I, as an adult, were to rate this book, I'd probably only give it 3 stars. It's fine, lots stuff to build. Being as it's a books for kids though, my kids definitely rate it 5 stars. They love it, especially my 7 year old. It allows him to not only see fun things to build and do, but it gets his imagination going (even more). He and his 4 year old sister can play for hours with these creations. My 7 year old is also able to build the majority of the things on his own, which again, really gets is imagination going.