Guess Who? Essentials:

• No. of players: 2
• Playing time: 20 minutes
• Age: 6

Guess Who? - Rules of Play says:

The mystery face game where you flip over a collection of faces with different color hair, eye color, hair, hats, glasses etc. to deduce who the secret person is that your opponent has chosen. You flip over the hooked tiles as you narrow your choices by asking characteristic questions.