the name of this game is "hang man"you can divid these people into several groups,for example 3 groups.And you write three words or phrases in private. Draw three hang tools in the blackboard and draw underlines under each hang tool. For example, if the first word is "please" then draw 6 lines.Then let the participants guess the alphabeta. If he guess wrong, you can draw a circle and second time the body, third and fourth time the hands, the fifth and sixth time the legs. Then this group lose.It's a little hard to describe, but easy to handle. you can search the internet to see whether there is a introduction for this.We often play this game in pur class.