Jeremy Lebens of Media Stomp wrote "James Cameron produces a very average cave thriller, called Sanctum. This movie wasn't written or directed by James Cameron. I feel the need to say that because lots of people thought so. Sometimes average movies need big names to present them so that they don't become complete failures at the box office, Sanctum is no exception. Several things work really well in this movie, but they don't hide some pretty bad acting and yet another predictable story. What happened to movies that kept you guessing? This movie could have been a lot better, but it also could have been a lot worse."