You want feedback, you get one. Really interesting concept for a game but if you are thinking about turning it into something more there are some things that could be changed/added. Besides obvious things like some music and graphic elements i want to mention that it would be nice to see some more options to play with the gravity like puzzles where you have to make blocks flight to the right, to the left or even diagonally. Also the options to mess around with the surrounding doesn't always have to be that easy like here. How about having levels where you have to get something or press something to change the gravity? Also elements that could be pushed by the protagonist would also be a nice addition. btw sorry if there is something I mentioned that is already in the game but I got stuck at some point ;w;
Overall i see potential in this. Wish ya the best with it! :D

cool game