What are some examples of games that take place entirely in one house/mansion? It’s ok if you go outside into the house grounds for a bit, but I would say not if, like in Realms of the Haunting, you get teleported to entire other dimensions.
Alone in the Dark, right? The first Resident Evil, I think. What else? Are there many non-horror games that do this? Luigi’s Mansion? Maybe the Edith Finch one (still haven’t played it).
I just think it’s a cool conceit.