Tonight's massive $43 million Powerball prize has not been struck and will jackpot on Saturday to a must win $50m.

The numbers were: 16, 10, 25, 32, 29 and 34. The Bonus ball was 40, and the Powerball was 4.

"Powerball has jackpotted to an incredible $50 million – and it must be won," said Marie Winfield, Lotto NZ spokeswoman.

If the jackpot is won by a single player on Saturday, they'll be taking home the largest prize ever won in Lotto NZ's history."

In a Must Be Won draw, if no single ticket wins Powerball First Division, the prize pool rolls down to the next highest division with winners.

"Powerball must be won this Saturday and it's guaranteed that one or more lucky Kiwis are going to win big – even if the prize is split."

"However the balls fall on the night, we know so many people will benefit from this prize. Winners always tell us of the amazing things they plan to do for family, friends and charities close to their hearts. It's going to make such a difference in their community," said Winfield.

Meanwhile, a lucky Lotto player from Napier will be celebrating in style after winning $1 with Lotto First Division in tonight's live Lotto draw.

The winning ticket was sold at Napier City Pak N Save in Napier.

Strike Four was also won tonight by a player from Leeston, who took home $400,000. The winning Strike ticket was sold at Fresh Choice Leeston.

Anyone who bought their ticket from either of the above winning stores should write their name on the back of their ticket and check it immediately in-store at any Lotto NZ retailer that is open, online at MyLotto.co.nz or through the Lotto NZ App.

The winning numbers for tonight's draw are: 16, 10, 25, 32, 29 and 34. Bonus ball 40 and Powerball 4.

Lotto players can buy a ticket for Saturday's $50 million Must Be Won draw from any Lotto NZ retailer that is open, online at MyLotto.co.nz or through the Lotto NZ App

Earlier today, Winfield urged Kiwis not to leave it to the last minute to try and buy a ticket online.

"When too many people are on the site at once it can slow down, which we know isn't great for customers," she said.

"The best way for people to avoid this, and guarantee they have a ticket for the big draw, is to buy their tickets early and avoid peak times."

Last week a whopping 4000 tickets were sold a minute between 5pm and 7pm for the $34m draw on Wednesday, August 5.

The MyLotto website and app has never been as busy, with the number of players using the method increasing by 33 per cent since March.

Given the increase in players online and the monster jackpot, there are likely to be unprecedented numbers of people playing online.

Powerball jumped to $43m after Saturday's draw offering $38m was not struck.

Lotto NZ first launched in 1987 and celebrated its 33rd birthday at the start of this month.

Since its inception in 2001, there have been a total of 191 Kiwis who have won big with Powerball and 943 have become millionaires through Lotto.

2019 Powerball winner statistics

• 56 per cent of winners said they'd keep working after their win and 13 per cent said it was too early to decide.
• 81 per cent of winners bought a new house.
• 100 per cent of winners helped family and friends with their winnings.
• 50 per cent of winners helped charities.
• 75 per cent of winners indulged in some international travel.

Interesting facts about Lotto's big winners

• 85 per cent of big winners kept working, remaining in the same job as before their win.
• 98 per cent of big winners still regularly buy Lotto tickets.
• 73 per cent of big winners surveyed won with a Lucky Dip ticket.
• 32 per cent were in their Lotto store when they found out they won, 27 per cent checked online and 26 per cent were watching the live Lotto draw.
• 19 per cent only told their other half, 31 per cent told their immediate family, 8 per cent told everybody and 5 per cent kept it to themselves.
• 23 per cent kept the winning ticket in their purse or wallet, 11 per cent in a drawer, and 5 per cent under their pillow.

Previous winners' advice

• Think before you spend: It's best to spend some time to think about your win and what you really want to do with the money before you start forking out.
• Secrecy: Be really careful who you decide to tell about your good fortune.
• Financial advice: Get help from a professional, they know what they're up to.
• Have fun: It's important to remember to take time to do the things you've always wanted to do for fun, once you've locked in funds for the future.