Yes, I've seen it about 6 months ago.
It's an excellent piece of cinematography.
I haven't seen polish movie such good since a long time (well, maybe I should put a "Pitbull" and "Jasminum" on the same list)
You can find a reviews here: imdb.com/title/tt1094278/
I really recommend it!
Sztuczki somehow remimded me of Amelie, this world famous French movie.
Let me explain. In both movies the main character wants to affect the real world by actions that he/she does from the point of his/her imaginary world. I can definetly promote this movie to people who are open minded about movies and want to explore movie culture of different countries.
And I just love the atmosphere of those old train stations.
I didn't like Amelie. I thought the first half was great, but then it gets annoying, without a lot of imagination.
I finally saw Sztuczki last Wednesday as scheduled. Very good film indeed, although the rythm was a bit slow for my taste. I'm not sure it deserved so many prizes. As for imaginary world, the big difference is that the impact of actions from the boy gets bigger and bigger as the story unfolds, reaching limits of danger sometimes, as if the author also wanted to express how the combination of a boring small town lifestyle combined to frustration from a damaged family leads teens to borderline behaviour... But I might just be overdiversifying here ;-).
Where was it shot? I have the impression that some locations are quite similar to what I see when I drive to Poland (and come back from it), crossing Dolnośląskie, Opolskie and Śląskie.