after downloading 1284 interactive fiction games, I came accross one titled introcomp 08.zip. what exactly is introcomp?
There are a few topics about it here, and here’s a website: http://introcomp.org/
I guess it’s possible that your zip file is unrelated, though. Have a look inside!
That is likely the collected zip file of all the entries to Introcomp 2008. They provide the games separately and collected in a zip, similar to IFComp, and usually that zip is stored on IFArchive.