Utensil: four small papers of "official, soldiers, caught, thieves"
Number: 4 people
Method: Four paper folded, and the four people participating in the game took a picture, and the person who smoke "catch" should guess the word "thief" according to the facial expression or other details of the other three people. Guess the wrong penalty, there are people who guess the word "official" to determine how to punish, execute by people who pumped the word "soldiers".
Excite points: simple and easy, not limited by time and place
Disadvantages: The number is not too much.