Deal or No Deal

Deal or No Deal is the name of several closely related television game shows, the first of which (launching the format) was produced by Dutch producer Endemol in 2001

The values of each of the cases depend on what is "inside" them. Various versions of the show have between 20 and 26 amounts, hidden inside boxes or briefcases. For instance, there are 26 cases in the U.S. version, having the values vary. In one case, there could be: $0.01, $1, $5, $10, $25, $50, $75, $100, $200, $300, $400, $500, $750, $1,000, $5,000, $10,000, $25,000, $50,000, $75,000, $100,000, $200,000, $300,000, $400,000, $500,000, $750,000, and $1,000,000.

Since the range of possible values for cases is known at the start of each game, how much the banker offers at any given point changes based on what cases have been eliminated. To promote suspense and lengthen games, the banker's offer usually strays from the expected value dictated by probability theory, particularly early in the game.

Worldwide, the largest amount offer (in terms of exchange rates) was ’Ǩ1,495,000 on the original Miljoenenjacht, on November 13, 2005 (which was accepted; the contestant's case only had ’Ǩ1,000) (see the Miljoenenjacht page for details), making it possibly the biggest win in the history of the franchise. Only a few people have ever won the top prize on any version of the show (see table below). But, to date, no contestant on the U.S. version of Deal or No Deal has ever won the top prize, although 16 contestants have chosen a seven-figure case as "their" case at their episode's beginning (not limited to $1,000,000US due to occasional increases in available prizes).

-Wikipedia