Re: granularity, I find myself using the term medium-size dry goods a lot, when picking out the classic style of IF game: something primarily concerned with the direct manipulation of familiar objects (rather than people or intangibles) at a human scale or something close to it. IF is very good indeed at medium-sized dry goods – there are few things more satisfying than a well-crafted inventory list – and often has difficulties when venturing outside it.
(I stole it from a philosophy term, but am using it in a much narrower sense; in Austin’s meaning, people are definitely medium-sized dry goods.)