The way to play is very easy and it's just like what you can see in those movies. We invited it for some 15 min and the plate started to move. It answered all our questions.
It was real cus all those friends who played this game together are still my best friends now and they nowaadays still claim that none of them moved had moved the pate during the play.
That's why I say it's so real! In those days I didn't know it can be so risky and so we played that for curiosity. But now I believe these are kid of "dirty" things around us and not fairy at all. SO it's better not to appraoch "them" la!!