"Guess Who" is a two-player board game where players try to identify each other's mystery character. Each player has a board with a set of characters, and they take turns asking yes-or-no questions to narrow down the possibilities. The goal is to guess the opponent's character before they guess yours. The game features a variety of characters, each with distinct features such as hair color, glasses, or hats. Players can eliminate characters based on the answers they receive, making strategic questioning essential. "Guess Who" is popular among families and friends for its simple rules and engaging gameplay.