Nice puzzle game, simple but effective. The ability to purchase 'cheat' moves is both a fun mechanic and also greatly increases puzzle complexity. Pastel colour palette is a nice touch, and the audio is very soothing. My only complaint, and this is probably an issue with Godot more than your code, is that my modest laptop (with integrated GPU) was running flat out to render this game, so I had to stop playing because my thighs are buring, even though I was having fun! :-) Regardless of that, great work!