The special effects in the movie are ingenious. I also enjoyed that the 3-D was only to give the audience a real feel of the place and characters and environment, not just to have things "jump out at you" for the sole purpose of making the audience jump. But, great effects don't matter so much without a good story, and this has a great story. This movie is NOT for young children. Parents, leave them with a babysitter! There is lots of strong language and brutal fighting - thus the rating. Plus, there are many details to the story and unfolding of the plot that I believe younger children would have a tough time really following. I wouldn't mind seeing it again, for one to catch some of the detail I may have missed.