"We have a few dozen LEGO sets, but this has been dubbed "the best ever" by our 13 year old son. Why? Because it is interactive and allows for play after it is built. Nearly all of the large sets he owns, once he puts them together, either sit proudly on a shelf gathering dust, or he ultimately disassembles them and makes other things out of their parts - meaning the original $$$ figure/vehicle can never be rebuilt again because the parts are all mixed up. This one definitely has his attention, long after the build-out was completed! The moving parts and the varying attributes of the finished product (not to mention the cars) have led to hours of imaginative playing entertainment. Definitely a winner!"