

In some countries, there is a preliminary contest in which the studio audience is whittled down to one final contender by several trivia question rounds, this final contender then proceeds to the main game.

The gameplay of the show differs from country to country. Thus, the contestant "wins" depending on whether the player should have taken one of the deals or should have held onto the original case or box until the very end.

Throughout the game, the player is offered an amount of money or prizes to quit, being asked the titular question, "Deal or no deal?" If the contestant rejects every deal and eliminates all the other cases or boxes, the player keeps the money that was in the original case or box. The contestant then chooses the other cases or boxes, one at a time, to be immediately opened and removed from play. After the player for the case game is determined, this contender claims (or is assigned) one case or a box at the start of the game, without its contents being revealed. the "case game" or "main game" ) which is played with up to 26 cases (or, in some versions, boxes), each containing randomly assigned sums of money. The centerpiece of this format is the final round (a.k.a. Deal or No Deal is the name of several closely related television game shows, the first of which (launching the format) was the Dutch Miljoenenjacht ( Hunt/Chase for Millions) produced by French content production company Banijay (formerly Endemol (Shine)).
