Operation MoonLight [Window too big]

I've tried to launch the game and found that the window created for the game is way bigger than what my screen (which is running at 2560x1440) can accommodate. 

I tried reducing the screen_width and screen_height parameters in the settings python file, but still unable to get it to render in the right size. 

System Config:

  1. Windows 10 OS
  2. pygame 1.9
  3. python 3.7.1
  4. Screen Resolution (2560x1440)