Have a question about how the TVTropes wiki works? No one knows this community better than the people in it, so ask away! Ask the Tropers is the page you come to when you have a question burning in your brain and the support pages didn't help.
It's not for everything, though. For a list of all the resources for your questions, click here. You can also go to this Directory thread
for ongoing cleanup projects.
Just my opinion, but only things that are actually about Vampires should be on that index. Just having some vampires in it shouldn't be enough. On that basis, I would say that the specific expansions count but not the games as a whole.
So, only the Vampires game pack for The Sims 4 would qualify? Nightlife, Late Night, and Supernatural all have content that's not vampire-specific while Vampires has a rather deep exploration of the titular creatures.
I was looking over the Vampire Fiction section and I noticed that The Sims is absent. However, only the second and subsequent games would count and only after certain expansions are added. Do the expansions still count for the section?