It's a game played between the artist and the audience, the rule of the game is same as three shell game but the artist use three cafés cups and 30 round stone made by clay, each stone have one word written on, this words about confidence, capacity and destiny.
The game start with conversation between the artist and audience about previous subject and how its connected to our daily-day, At the end the artist invites the audience to chose on of the stone and used as pea in the three sells game and if he guess where is the stone he take it if not he loss. 
Confidence game is about the idea of how control the game rules or we lose the control sometimes, bout the game still ours.