Here's the first in what may (possibly) be a series of half-life maps:
http://geocities.ws/emptyhalls/files/emptyhalls-map1.7z
Be forewarned, it's pretentious and lasts less than five minutes.
Edit 24 April 2016 : May possibly = will definitely
Edit 1 June 2016 : Moving right along, bit of what you could call "feature creep", though. You know how it is :p
Number 2:
http://geocities.ws/emptyhalls/files/eh2.7z
Images:
And a few things from the future:
