I have the same set. It installs as Encyclopedia of Games Vol.II. Trying to run it in Windows 3.1 produces a THREED.VBX not found error. I am able to run it in Windows 98.

You'll have to install visual basic runtimes first.

I don't see that mentioned in the 3.1 guide. Any further information?

There is not much to say, except there are visual basic runtimes that aren't included with Windows, and some applications that need them do not include them due to space constraints.

There is probably some vaguely-official Microsoft distribution for the runtimes in question, but if not there are a bazillion places to download THREED.VBX from for starters, and the application in question will probably ask for the whatever other ones it needs afterwards.

The thing is, THREED.VBX is located in the install folder. The program just doesn't recognize that it's there.
Though this is only a problem in Windows 3.1 as I mentioned before that it does work in Windows 98.

Oh, well. If it was a Win9x problem, I would suggest running regsvr32 on it, but I have no idea what the Win 3.x equivalent is, if any. Perhaps the program in question is looking in C:\Windows\System first?

Moving it to that folder didn't help.

Well, I did find http://support.microsoft.com/kb/111296 , which suggests there's nothing that needs to be done except for copying it, in theory.

Maybe the copy of THREED.VBX on the disc is bad?

Or maybe the installer is just buggy and it's not looking for THREED.VBX at all, but some other file instead. Or maybe it has something to do with the disc being read-only.