Cool concept for a puzzle game! I would just contrast the ON/OFF walls a bit more. One idea for the future is having a limited amount of uses for each tool that resets/changes each round.
Fun game! I liked the story and the gameplay was fun. My only suggestion is making the slime brighter or clearer in some way since I was a little confused about where I was when first starting up the game. Agree that some moving enemies would be a good addition.
