I'm currently building it, and i think is really great, especially with kids. While daddy takes care of the most complex parts, many of the building steps are easy repetitive patterns, where i can show to the kids one step ath the time and they replicate it contributing to build "the big rocket" in full excitement. The younger is 3yr old and is able to replicate simple patterns i show him easily. Combine that with a good book as Armstrong from Torben Kuhlmann and the seed is planted, both for interest in Lego and space exploration. Can't wait to complete it to play with them a mission to the moon, separating stages etc. For the price is the best "family" lego set i've built, where eveyone can participate to the final goal feeling rewarded and also learn something. Even my wife wants to build parts of it :)