Bleakly atmospheric, but low budget and slow moving, this movie does not deserve to be mentioned with truly top-flight sci-fi flicks such as Alien(s) etc., but it DOES deserve mention as one of the best of the rest -- as a solid entry that at least tries something a little different than the standard "monster eats everyone" or "alien invasion" plots which dominate the genre. Does a nice job of conveying the weary hopelessness of its characters and until a somewhat sloppy, although poignant, ending, it generally plays by the rules. A lot of questions go unanswered, but that too works for the movie -- the characters themselves never truly understand what is happening to them, and are stuck trying to piece together clues. Overall, a nice, solid time-waster that just suffers from a lack of ambition. Something like a 6.5/10.