It was magically quiet and the title suits the movie. The best thing about the movie is that even with minimal dialogues(hardly below 30 in total I guess), the actors have expressed themselves so well that we will be astounded by the performance, including the kids. It's scary and creepy because, it's too damn silent, with no background music for the major part, and the suspense of what the creature is and how to survive.
PS: If you love horror movies, don't miss this one!