If there already is one of these, then I'm very sorry. Please PM me or comment to tell me this, and I will ask someone to close it.
So how this works, is you guess something about the avatar below you. It could be what color they like, what they're wearing, how they look in real life, if they like a certain book, etc. And the person that posts next, answers with a "Yes, you're correct!" or "Nope, sorry!" or something along the lines of yes or no. And then that person guesses something about the future avi below them, and it continues.