Advice to all: read the book first. I found this movie as a good set of illustrations for book but sometimes we can see a little differences. E.g. under the book Maxim learns the native language by oneself and under the movie he puts "worm-gadget" into ear :-) Most of actors are well for his characters but not all IMHO Guy was showed too crazy. Arkadiy and Boris Strugatskiy are not only sci-fi writers. They are good thinkers too. And in each their book we can find a lot of thoughts. So I think that it was better to create a series of movies. And I even think that this movie should be remaked. At least it should be trilogy... A series of movies allows to save their thoughts and it also allows to remove any differences with book. I think film directors can cut something but they shouldn't add false episodes.
Finally I think that it is mediocre movie but a good set of illustrations. So (5 + 9) / 2 = 7 :-) My vote is seven.
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