"There are many many blue pieces. As you can tell from the picture. There are four opening doors that you put the mini builds in. Moving parts are always fun on Lego pieces. The only complaint I have is the shooter. The place for the six extra storage is not easily put on the Lego set and is not easily removed without detaching the two middle fingers of the craft. Also the shooters are in a weird spot and sort of just sit on the craft they aren’t attached. I have built many shooter crafts and they all had the shooting mechanism attached. This one just slips in a hole. Very fun build, lots of fun for play too! Very sturdy, good buy all around!"