I think fair reviews rate movies in the context of movies in the same genre of equivalent backing. So comparing this to a science fiction movie from a big studio and budget is unfair. This movie has excellent cinematography. The concept and idea of this film is excellent and the reveal is worth the wait. The criticism is I think it is slowly paced. I think a faster pace and extended scenes to fill in sone more detail would have really made this movie shine. At the conclusion I wanted to know more. Perhaps sone more explanation in the end to give sone of the earlier parts more detail. It is worth the watch.