Total aside here but there’s tons of fanfic out there for Dr. Who and no one has had any trouble. Some franchises do give you trouble (Star Trek being one). But the Dr. Who fan fiction has been going strong for quite some time. The owners of the Dr. Who copyright have pretty much stuck to the idea that as long as you (1) aren’t claiming the intellectual property as your own and (2) you’re not making money from it, then you’re fine. Whether the Interactive Fiction Archive will or won’t upload it, I suppose, is a different issue. But it would be pretty silly to exclude it since, again, Dr. Who fan fiction of various types has been out there for a very long time with the explicit okay from the owners of the copyright with the above stated caveats. I also don’t think the owners would treat interactive fiction as too much different from the written fanfic.