This was really fun! I liked the fact that you have to be strategic with the inputs and where you place them, it creates a good risk/reward relationship for leaving a key behind. The only thing I wish it had was an undo movement feature, kind of like in "Baba is You", so I didn't need to reset the level when I made a mistake in the puzzle. Also the reset button isn't working for me when I click it. But other than that, this was great! Good Job!