SmileTheory

I googled around a bit and found https://github.com/OpenRA/OpenRA/blob/629fe95ebdfd669d04af5cdbdb900bf09e08e39e/OpenRA.FileFormats/Filesystem/InstallShieldPackage.cs . Reading that was enough to extract the files, though I figured out the modification date/time was in old DOS format, and that's documented at https://msdn.microsoft.com/en-us/library/windows/desktop/ms724247%28v=vs.85%29.aspx .

So I wrote an installer for installing off CD. Well, some of it. blast.c/blast.h I got from the contrib folder in zlib, and are Copyright © 2003, 2012 Mark Adler. Installer is attached. Source code is at https://github.com/SmileTheory/d2kinst . D2KInst.zip