This film proves that you can make a decent science fiction move without millions of dollars in CGI and complex sets. It's essentially a one-man show, and a good one at that. There are a couple of plot twists in the latter half of the move that you can sort of see coming, and while the first may seem a bit cliche at first, it's played out rather well. It does somewhat foreshadow the 2nd plot twist, but again, it's done much better than some other films have done.
Ian Rowe is the only live actor you see in the film, and he does a very good job of underplaying a role that could easily have become a caricature.