That's due to our game being in 4:3 aspect ratio, which looks a bit weird when opened fullscreen on modern monitors, since basically all of them are widescreen.
Try making it fullscreen it will definitely be welcomed by all players and will only improve our experience.please understand i am not trying to be a complainer, its just that i like this game a lot like a lot of others and hope it becomes more awesome game ,sorry if it troubles you .you can just ignore if it clashes with your plans for this game , thx for this awesome game