Clearly no Sci-Fi movie. Unclear what it is...

Rating: 3/10 (25 December 2018)

First of all I'd like to point out that this is NOT a Science Fiction movie.
For 80% of the reviews it seems to go without saying that it IS a Sci-Fi movie. Hoewever I don't see why it could be classified that way.
Of course, there seems to be something extraterrestrial. But since the movie does not explain anything and stays vague and mystical till the end, there obviously is no science in this fiction.
But if it's not Sci-Fi, what is it then? Hard to tell. As I already stated, the whole movie is quite vague and mystical. There really aren't much hints (and certainly no explanation) about what is going on in the "world" of Annihilation. And since you don't get to know what's happening, you can't really classify the movie. Just from the things that are shown and said, I'd call it a rather bad mystery thriller. But I also see that a lot of people seem to describe it as some kind of metaphor for a psychological disorder.