What started off as a short, became a feature length movie. And Guillermo Del Toro was the one who saw the potential in the movie. In both movies so to speak. The general idea is simple and yet very horrifying. Having two children in peril will work most of the time. Shooting this like it is one take (great effects doing that and the other things in the movie) was genius too.
Of course there are more takes, it's very complicated, but also very short and you get the feeling of dread and fear. Saying more about it, would spoil the "fun" you could have watching it. The good thing is, it doesn't matter if you watch this before watching the feature length movie or afterwards. The movie itself is kind of absorbed as one scene in the movie ... though it has a small difference ...
