desktop - ICONs, animated cursors. Anything to enhance your desktop.
images - Graphics
msdos - Games and demos and other stuff for PC's.
movies - AVI Animations files.
sounds - Sounds in WAV format.
stories - Stories (fan fiction)
wads - WADs for Doom, Doom 2 or Heretic.
Also check out the web site at http://rat.org/mk/mkinfo.html
or if you can, click here.
For other file archives, check out http://rat.org/mk/ftp.html
If you have a web browser, click here