The $50 million mega-jackpot is set to be just the sixth time in history Powerball has reached a must-win draw worth $30 million or more.
Should there be a single winner on Saturday, they will take home the largest prize in Powerball history, eclipsing the $44m an Auckland couple scored in a "Must-Be-Won" draw in November, 2016.
The current second highest win was also a must-win draw in September 2013, when one Auckland winner took home $33m.
Other must win mega draws have included a $30m draw in October 2008 in which the eventual $30.5m winnings were shared by five people taking home $6.1m each and a $35.2m jackpot three years later won by two players.
"With a Powerball Must-Be-Won this Saturday, it's guaranteed that one or more lucky Kiwis are going to win big – even if the prize is split," Lotto NZ's Marie Winfield said.