I downloaded it on Friday, after seeing the write-up in 3DWorld magazine.
I agree - 12 minutes of beautiful modelling and captivating animation and storytelling.
I cried real tears at the ending - how's that for immersive?!

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)