Deal Or No Deal premiered on NBC on December 19, 2005. The rules are simple. Choose a briefcase. Then as each round progresses, you must either stay with your original briefcase choice or make a "deal" with the bank to accept its cash offer in exchange for whatever dollar amount is in your chosen case. Once you decide to accept or decline the bank's offer, the decision is final. Contestants are encouraged to ask friends or family in the audience for advice; however, only the contestant's answer will be considered binding and final.