I like the idea but it's not quite as simple as they explain.
First, the age level is around 5 and up, and allows them to build things that aren't typical Lego designs. Good deal. But the basis of the instructions is that they select from Legos they already have. NOT so easy, because many Legos already have movie-tie-in logos on them or are specialized. It's not easy to find the plain, simple, old school pieces this requires.
So, taking the time to find the pieces to use was a killjoy. The designs are easy but just really hard for that age group to remain patient and find what they need.
Definitely a book that needs a parent or friend's involvement to find pieces.