Really cool movie with great art style and nice animations.
Only two flaws: Some animations are strange (on the river, we have a stream, but the water isn't moving/floating) and some cartoonish elements won't fit into the movie (I only say "Giant Rock Ball").
Oh, and you'll have fantasy and sci-fi elements.
(this giant flying dragon should originally be a gen-modified chicken btw

)
But who wants to see movies apart from the mainstream should definitely risk an eye (or two, if you could).