Thanks for the amazing comment! Yeah the team is on the large size and even though there is more capacity it also complicated communications and keeping everyone aligned on the concept and ideas.
I agree that the music and visuals is definitely one of our strongest suits.
The version you played did indeed have some bugs which we've mostly worked out over the last few hours. The upgrades should be fixed and the tutorial has been changed to flow a bit better. (volume should also work as intended now)
I do agree there is potential in the game and we might be continuing development for a bit (maybe with a smaller team) after the jam to maybe get a steam release going and improving input across multiple devices and input methods.
Thanks again for the comment! I also like the style of your game a lot!