Just some feedback, I dunno why, but in my screen, the game area is just one quarter of the space (I think is something to do with high DPI display that I use).
yeah, it's designed for 1080p, given that it's all pixel-based I'm not sure of a good and easy way to fix that.
Updated, it should now scale 0.5,1,1.5 or 2, based upon your window size.
That’s it! Much nicer now in my screen!