In a Must Be Won draw, if there are no First Division winners the entire jackpot rolls down to the next Division where there are winners - for example, Second or Third Division. If there is more than one winner in that Division, the total jackpot is shared evenly amongst all winners.
Earlier this week Cherrywood Lotto and Book Shop owner Bublee Kaur said the shop had been run off its feet, especially on Saturday, when the jackpot was $30 million.
"Everyone wants to win. People are going crazy about the $34 million - they want the money."
Tauranga man Kevin Brokenshire ensured he got a ticket once a week.
The most recent Powerball Must Be Won draw was in September 2013, when a player from West Auckland took home $33 million to become the country's largest ever individual Powerball winner.
Amidst the excitement of the Must Be Won draw, Lotto NZ is encouraging people to play responsibly.
Emilia Mazur, general manager of corporate communications said: "We'd like to remind our players to be realistic about the odds of winning and to only spend what they can afford. Responsible play is all about being informed, having fun and knowing your limits."
What you need to know:
• $40 million is up for grabs this Saturday
• It will be the largest Lotto prize won in New Zealand history
• It is a Must-be-won draw
• The six most frequently drawn winning numbers since 1987 are 1, 7, 12, 13, 18 and 21
• A Powerball of 2 has been drawn 111 times
• The biggest prize won by a single ticket was $36,890,255 in the Big Wednesday draw of June 2009