Season 13

2021 · 31 episodes

Episodes

1Episode 1Twelve brand new housemates arrive, determined to beat Big Brother at his own game. As they get to know each other, they have to contend with Big Brother’s new house, new playground and new tricks.
2Episode 2After an explosive eviction, new friendships and alliances solidify. But little do they know, eight new housemates are descending via BB Air and they’re about flip the game on its head.
3Episode 3It’s party time as housemates old and new get to know each other. But as alliances form, battle lines are drawn. Who will be next to leave the Big Brother house? Big Brother is hosted by Sonia Kruger.
4Episode 4Get ready for a week of surprises, but they’re not necessarily all good ones. Which surprise will shake up the entire house? Big Brother is hosted by Sonia Kruger.
5Episode 5It's surprise after surprise as Surprise Week continues. As one housemate’s position hangs in the balance, will his big mouth be his downfall? Big Brother is hosted by Sonia Kruger.
6Episode 6Big Brother has the hungry housemates run off their feet and it's a battle royale as carnivore and vegan go head to head.
7Episode 7Surprise Week ends with the biggest shock of them all when Big Brother’s secret attic is revealed!
8Episode 8It’s Big Red Button week and the housemates have to decide whether to push or not to push. With all housemates on edge, someone has a plan to change things up.
9Episode 9The Big Red Button is in the house and no-one knows if it will bring punishment or reward. As reality hits, loyalties are tested and the determination to win is greater than ever.
10Episode 10As Big Red Button week continues, Big Brother reveals another secret room. While one housemate feels more isolated than ever, there’s an advantage so big it’ll push everyone to their limits.
11Episode 11Keep your friends close and your enemies closer is the name of the game for one determined housemate. A monumental blindside unfolds when they finally get their shot at revenge.
12Episode 12The housemates are about to get the shock of their lives as six incredible intruders prepare to turn the game upside down.
13Episode 13Big Brother’s panic room takes two new victims and which two intruders will rise to the challenge and join the game for good.
14Episode 14The housemates are tasked with mission impossible; a pumped-up challenge leaves someone feeling deflated; two housemates get close and an eviction ceremony shock.
15Episode 15Housemates have to keep their cool in Big Brother’s most nail-biting challenge yet. Could a budding romance be the kiss of death? And Sonia reveals another big twist! Hosted by Sonia Kruger.
16Episode 16While the walking dead housemate gets ready for battle, a new force is on the rise. Will they be strong enough to make their target the next walking dead? Hosted by Sonia Kruger.
17Episode 17Big Brother flies in some special guests for a task that has everyone in a flap. Which massive player won’t survive the walking dead eviction showdown.
18Episode 18Big Brother unleashes the devil within, pushing housemates to the limit - mentally, physically and emotionally - in the most brutal challenges yet. This is hell week.
19Episode 19Big Brother adds fuel to the fire of Hell Week with a spectacular twist that will send home a major player.
20Episode 20Hell Week reaches it's dramatic conclusion with the most terrifying challenge in Big Brother history. Then an almighty bombshell blows the game up.
21Episode 21The new heads of house embrace their role, joining forces to create havoc. Meanwhile past alliances are thown out the window.
22Episode 22As the heads of house enjoy the perks and power of being 2IC, Big Brother goes into overdrive, revving up the rest of the housemates. Can one housemate talk their way back into a circle of trust.
23Episode 23With just eight housemates remaining, paranoia is high and huge deals are being made. What massive game changer lies with Big Brother’s secret eye?
24Episode 24With the end game getting closer, get ready for the biggest move the game has seen as the shimmering jewel in Big Brother’s crown is revealed.
25Episode 25As housemates deal with the ramifications of the last eviction, someone awaits a roommate in the mirrored room – but will they go crazy first?
26Episode 26A massive challenge with a massive reward will push housemates to their limits but the biggest surprise is yet to come when the mirrored room is revealed.
27Episode 27The end is in sight and it’s do or die for the final seven housemates. They’ll push themselves to breaking point through the toughest challenges yet in a bid to save themselves from eviction.
28Episode 28Paranoia is setting in for the top six housemates as they fight for their lives in Second Chance Week.
29Episode 29After months of challenges and evictions, only five housemates stand and everyone has their sights set on podium. All that lies between them and the final four are two epic nomination challenges.
30Episode 30Big Brother’s heartstopping end game is here as the final four battle it out. Who will make it to the final three ahead of the epic live grand finale?
31Episode 31All the housemates are reunited as host Sonia Kruger grills the final three on why they deserve Australia’s vote, before the winner of the ultimate reality television title and $250,000 is announced.