This is a pretty cool take on the theme, and well put together too. I prefer simple mechanics because I don't want to have to go through long tutorials, and you did a good job on that.
My only complaint is that the movement in 3D was somewhat confusing because the key pressed did not align with the direction I was moving, so visually that was a little confusing to my brain (:
I though the music and art were simple but they worked and didn't have any complaints there, the overall feel was very "clean" and "minimalist" and I appreciated the consistenency.
Thank you for making this. I think we actually took similar approaches to the game jam, although our mechanics are different, so I would love your feedback on my game as well.