Wikipedia:The Rich List (New Zealand game show)

The Rich List was a New Zealand television game show, which debuted on 23 June 2007 and aired on TV One. The show was hosted by Jason Gunn and produced by Imagination Television. Three seasons aired before it was cancelled in 2008.

How the game works
Two teams containing two players, who are unknown to each other, play from inside sound proof pods. Then they can discuss and deliberate over answers and tactics with their teammate, without their opponents hearing what their game strategy may be, or how many answers they actually know.

The two teams bid upwards against each other while predicting how many examples of a particular subject they will be able to list. If a team fails to list as many answers as they predicted, the other team wins the round.

The winners of the best of three lists move on to play The Rich List, a new game of list-making where increasing amounts of money are up for grabs, like this:

However a wrong answer at any stage means all money for that rich-list is lost. Regardless of whether they win any prize money, as the reigning champions they will return to face new opponents.