Ruin Explorer
Legend
I'd say the closest was Mystara if you're playing something in BECM D&D, and assuming you ever get into the domain rulership game. Even that requires a lot of work from the GM to get it close.
I'd say Taladas got closer in terms of social/societal realism, but it was Dark Ages rather than Medieval (an astonishing setting, really), but I came to Mystara late, after a lot of silly business had been added to a more sensible core, so perhaps that affects my opinion.
I think the TV series is skirting close to torture porn in the way it has dealt with Theon's story.
Indeed, but it's the polar opposite of the book in that regard.