I like the graphics style and the music, it gives a nice atmopshere. It's also short story which is nice. We have time to see the whole story in few minutes.
But I should said it ends quite abruptly. I was like "maybe my game crashed". Maybe a final picture would have been more "soft" to inform it was finished.
Also, even if the theme is respected, I'm sure you can go farther. You have a nice universe you placed and you can explore a bit more about it. Also, maybe put more "out-of-control" moments. They are nice but not really that much present in the game and they don't bring lots of thing. And the situation becoming out-of-control at the end is put a bit fast, so the player doesn't have time to really appreciate it.
Even with all these feedbacks, good job ! Well done !