Wow, this is a cool interpretation of the theme. I love your art style! Really clean lines in a way that shows a lot about the characters' internal state without being overt. For your second game this is really stellar, you should feel proud!
For your next games, my advice would be to focus on the player's journey very very closely. As a player with zero idea how to play, what menu buttons do I need to click at the start? Are they necessary? What keyboard or mouse buttons do I need to click? Do I know how to do that? Are you leveraging gamer knowledge (like WASD)? Is your game accessible to non-gamers? What device does your player use? Are they wearing headphones?
All of these expand your craft in different directions that I find provide constraints to let creativity flourish in really interesting ways. Anyway, kudos on your second game!