Sci-fi isn't normally my top choice but this film was outstanding. It's a feast for the eyes. There are some violent scenes but the director saw fit to keep the blood and guts to a minimum...you don't have to see that in order for some scenes to break your heart. It will make some reflect on war and the environment, without being totally depressing, as some films are these days. A good choice for both adults and older children (10+). The 3D added to the visuals without being obtrusive.