Big Brother (AU) — Season 12

Big Brother has been watching and he's ready to play. The first 12 housemates enter the Big Brother house and one is tasked with a secret mission.

Four new housemates enter the Big Brother house under the cover of darkness. Big Brother unveils a winter wonderland that will force old and new housemates to break the ice, but one will be evicted.

The final four housemates descend from the heavens and the King and Queen of the house aren't impressed. While some housemates get close, others better hold on tight because someone will be evicted.

As two Housemates get close, others are forced to face their deepest fears. With a house divided, one big play changes the game. Hosted by Sonia Kruger.

Mother Nature unleashes hell as Housemates compete in the most physically gruelling challenge yet. There's a storm brewing inside the house when one person sets off a game of "he said, she said".

Sleep deprivation sets in with the latest House Task, Big Brother sends Housemates in a spin, and there is a huge twist on the horizon. Hosted by Sonia Kruger.

Big Brother gives one housemate a second chance to take down the others. As the housemates become ‘Yes Men’, there is another nomination challenge to get stuck into.

One housemate decides it’s time to unite the two sides of the house to get rid of a common enemy. But could this big move backfire? Plus a surprise return!

With a dark cloud hovering over the house, Housemates must brave the rain if they want to win big. The boys live it up with an advantage over the girls.

Things are getting cramped in the house as one housemate plots a risky power play.

As alliances shift yet again, one housemate’s willpower could be their strongest ally.

They've made it to the top 10, but there are plenty of shocks ahead as the game heats up. A bold plan is hatched, but a costly mistake from one of their own could be the alphas' undoing.

They’ve been cut off from the outside world for 28 days but that’s all about to change. Big Brother is placed into lockdown and the game is suspended as the escalating coronavirus pandemic hits home.

A shattered Housemate seeks revenge and sets out to bring down an unbreakable alliance.

One gravity-defying challenge and two unbreakable bonds but the big power sits with a little package.

Paranoia grows and game play takes an unexpected turn as Big Brother saves his most epic twist for last. Big Brother is hosted by Sonia Kruger.

Big Brother’s mind games test the housemates’ resolve, while the nomination challenge puts loyalties to the test. Big Brother is hosted by Sonia Kruger.

With only four days left in the house, the $250,000 prize is closer than ever as two housemates roll the dice on Big Brother’s biggest twist yet! Big Brother is hosted by Sonia Kruger.

The battle lines are drawn for the biggest showdown of the game as the Top 4 for 2020 is decided. Expect two epic challenges and a monster twist when one housemate’s secret power is revealed.

All that stands between the Top 4 and a place in the grand final is one incredible nomination challenge. Who will win the power to determine the Final 3 for 2020?

The live grand finale is here. Three housemates remain but only one will win the title of Big Brother 2020 and the $250,000 prize. Who wins? You decide.