We subscribed to this for our kids for several months. They lost interest and we received several more crates before our subscription ran out. This is complete. Unopened packages of supplies. Only opened the box to obtain the pictures. It is a great, step-by-step (picture 2) how to to complete the project. Allows your child the accomplishment of doing it independently!! Recommend age of Eureka is 12 minimum. However depending on your child, any age.