Very cool game, I wasn't expecting it to be as intricate as I initially thought! The graphics are clean (mostly the UI) and I could see everything nicely.
The only big gripe is turning the cube is too slow for my liking. It made it slightly frustrating to move my gaseous form through certain corridors because of this. Also, having some cues play in the background during some interactions would be a fine addition to make this game more stylized and less boring to look at.
Otherwise, nice job.