Abuse Windows port from 2001 made by Jeremy Scott. Also includes source code and his Abuse 2 engine preview.
Files have been downloaded from here:
Because the original installer doesn't work on modern Windows anymore I extracted the files and uploaded it all here, so others can try it out more easily. Surprisingly it does run on Windows 7 64-bit with some minor graphical issues and occasional crashes.
You can also run the game in editor mode using the "-edit" command and change resolution using "-size x y" command (but only when starting in editor mode).