Marj2022 5 My 4 year old really liked it and wants to get another one. We completed it in about 2 hours. It would take longer if you don't help with the hammering though . The skeleton T-rex can be played again in the sand box for example. I wish they did other types of dinosaurs too. Play with it outside and on a sheet of old magazine/ newspaper to clean up faster. It can get pretty dusty!