Simplicity: Quite simple, by far the best.
Fun: Not very, but that isn't the goal.
Creativity: A unique idea
Visuals: A strong art style!
Sound: Despite it being based on sound I don't think the sound is up to par. The default tracks aren't that interesting, and it is made worse by the engine's limitations.
On topic: Kinda, visually and story wise (is it considered story?), but not mechanically.