ill give you a screenshot
you pick a gold box 1-20 and then in that box you cant leave with less than that. then you pick a silver box 1-20 which determines your jackpot + a Bugatti Veyron (fastest car in the word-252mph)
then here's the board
you choose your box 1-30 then reveal 28 other boxes to be left with the final 2. the prizes will be converted into money according on how much they are worth and you are given an offer. you can choose to deal or no deal. then you go on to Nothing, double, triple or 4x money,
there are 8 boxes, 4 mothing, 2 double, 1 triple and 1 quadruple and it works the same as double or nothing in the aussie version