Deal or No Deal is the hit television game show franchise where a contestant chooses a sealed briefcase containing a hidden cash amount ranging from a penny to $1 million, then tries to out-hustle an unseen figure known as "The Banker" by accepting or rejecting escalating cash buyout offers. Originally popularized in the US by host Howie Mandel on NBC starting in 2005, the format has seen numerous international adaptations, syndicated runs, and spin-offs like the strategic reality competition Deal or No Deal Island.