I really loved your game. When I was a child and saw some screensavers, my thought was to be able to "play inside" these screensavers. And this game did just that.
In my opinion, some games can be considered art because they cause emotion and a good feeling. And this game did just that. I was really excited about the ending. For me, it's 5/5 as it was a pleasant surprise. Congratulations!