I thought Vivarium was a nice surprise from a movie I didn't expect much of. The story is completely refreshing, i can't recall watching another movie with a similar story so that's already a positive point. There are too much movies with repetitive stories so to see one with an interesting plot it gets my attention. It's a weird story, so if you don't like the bizarre (that's those with the negative reviews) then you should just not watch it, you will be disappointed. Vivarium is the kind of movie that makes me talk out loud during the viewing, what I would do if I was in that case and so on. The plot is intriguing, the decor very minimalistic but that definitely adds to the odd ambiance, the cast is very small but good. Once you're in the story you defintely want to know what the hell is happening and where they are going to? Maybe the end could have been a bit more elaborated but overal it's a movie that deserves a better rating, just for creativity alone.