Who? the Game, play against your Facebook friends! is a game of guess who for two players and it's your job to guess what common Facebook friend your opponent has as a mystery friend. You're able to use standard questions or your own that are answered with a yes or no. It certainly sounds like a fun way to get to know your friends better!
Who? is based on the successful board game "Guess Who?" and it allows you to play with friend no matter what platform they play on.