Really cool game! I really liked the retro music and the art style was nice and simple. The levels were nice and got progressively more difficult, only thing I noticed was that the gravity switch was pretty fast and I did struggle a bit at the level where there were lots of the switches. Other than than the game was a lot of fun and a nice challenge :D
I don't know if you've heard of Game Development World Championship before (gdwc2019) but it's a competition for indie game developers where they can submit their games and it's free! It's great if you want some more visibility for the game and it only takes a couple of minutes to join :)