We’ve been playing 20 Questions. Someone thinks of something, and everyone else guesses yes-no questions, until either someone guesses it or we run out of questions. Typically, the person who guesses the right thing starts the next game.
It was all in one enormous thread, but I’m going to break it up, and put useful references and links here.
I’m also moving some posts that answer “how are we playing this” here. Not that we can’t change, but may as well be able to see what folks were doing.