Just did, really like your game. It's also nice to see a Godot entry, while I haven't had an opportunity to really dig into it myself (just did some tutorial-y stuff with it), I really like the idea of an open alternative to Unity.
We did a kind of similar thing, were you get one bouncing projectile in our game, though other than that it's very different, being an action top-down shooter rather than a puzzle game like yours. Would love it if you gave it a try: https://itch.io/jam/gmtk-2019/rate/462587