Hi,
I've made a ppt to explain this game. I only played with my students (without ppt) once and they didn't understand, so I hope this works. I got the idea from here:
http://www.eslcafe.com/idea/index.cgi?display:957196663-7287.txt.
I'm going to make it so that half of the students must move chairs and the other students will sit and wait until someone talks to them.
Cheers