This is a great PowerPoint game I've used in both my ESL and my History. It's a simple guess who game where groups or individuals can ask a guess who like question:
Does he have... Is she...
If the answer is "Yes" simply click on any number reveal part of the picture. As more and more squares get reveal the image of the person become clear. Once a student can guess the person in the picture they will get a point or a prize.
Of course pictures can be edited or replaced depending on your style or geographic location.
Be sure to create a Teacher's Cheat Sheet so you can be sure you're saying the right information about the pictures.