I'm somewhat annoyed that too many people are dismissing this intriguing work out of hand, either because they hoped for some gratuitous and nasty torture chamber of horrors like Hostel or Saw or because there was a bit of thinking involved in relating to the philosophical symbolism. So it wasn't perfect, had some plot flaws and was obviously made to a budget, but personally I like this type of small cast experimental sci-fi... it had heaps of heart, and I thought the cinematography was done very well given the challenges of a restricted space, the acting was gutsy and the music gave it quite a bit of emotional depth. Well it kept my interest and engagement much more than a lot of the slick expensive nonsense Hollywood churns out lately, and it had a bit of strangeness too which for me just made it more endearing.