American Horror Story: Asylum
I can't help but think of "Sanitarium" when I first saw the "American Horror Story: Asylum" tv series. If you liked Sanitarium, you should really give the American Horror Story series a try. They are very similar in story telling and the character "Pepper" is right out of Sanitarium. She even says a line from that game: "You OK boss? You look a little green around the gills."
Oh wait, I think that quote is from "Planescape: Torment." Oh well. It's a great game, too.