First off, I'm very excited to see the game progressing, and can't wait to play the final polished version.
I would like to make a small suggestion for the game in windowed mode. It's fantastic that you support both full screen and windowed modes. Some modern games by allegedly AAA developers don't support windowed gaming.
However, some Arcen titles have quirk I find annoying. If I click accidentally at the window borders, it will do the default operating system thing and start to resize the window. This tends to to hitch my system for a little bit. It would be great if you could disable drag-to-resize like you do in Tidalis or A Valley without Wind.
Thanks for your consideration.