It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

×
Noctropolis.cfg let you change the size of the screen, it's a text file.

fullscreen "-1" = full screen
fullscreen "0" = windowed

Adjust screen size as wanted:
screenheight "480"
screenwidth "640"