Who Wants to Be a Millionaire is a television game show which offers very large cash prizes for correctly answering successive multiple-choice questions of increasing difficulty. The format is owned and licensed by the British production company Celador. The maximum cash prize (in the original British version) is one million pounds. Most international versions offer a top prize of one million units of the local currency, though the actual value of the prize varies widely, depending on the currency's exchange rate. In at least one country (the United States) the top prizes are no longer cash, but annuities.