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I noticed that Dilbert's Desktop Games isn't in the software list, or the Windows 98 Software Collection. It was on the Windows 98 CD (as trial software). Since it was circa 1998 and not used anymore, it would meet the definition of abandonware.
I happened to have played this from the Win98 CD too, but I should tell you that it was present only in the First Edition one. Would be a nice addition though, to everything else Dilbert here