Deal or No Deal
Deal or No Deal involves a contestant, a host/presenter, a banker, and a number of briefcases (or boxes), with each having a different (and initially unknown) value. Each game starts with the contestant selecting one of the cases–this first case's value is not known until the game ends.    During the rest of the game, the contestant opens the rest of the cases, one at a time, revealing its value.  Each time after a specified number of cases are opened, the banker offers the contestant a certain amount of money to end the game.  If the contestant takes an offer, the game ends, otherwise the contestant ends up with the money from the first case.