“Expect the unexpected.”
CBS
American version of the reality game show which follows a group of HouseGuests living together 24 hours a day in the "Big Brother" house, isolated from the outside world but under constant surveillance with no privacy for three months.
Season 1
70 episodes · 2000
Big Brother 2000 was a near-exact port of the hit Netherlands (Holland) series of the same name. Every week, Housemates would nominate two fellow housemates and the two or more housemates with the most nominations were eligible for banishment. American viewers could then call a 1-900 number and cast a vote to banish a HouseGuest.
Season 2
30 episodes · 2001
This season brings a complete reformatting of Big Brother 1. The introduction of the Head of Household (HOH). The HOH nominates two houseguests for eviction. The fellow contestants vote, and the player with the most votes is evicted. On finale night, all former houseguests returned to vote for who they think should win the grand prize.
Season 3
32 episodes · 2002
This season brings about more changes to the Big Brother format - the introduction of the Silver and Golden Power of Vetos.
The X-Factor
33 episodes · 2003
In this season's twist, ten of the thirteen houseguests are shocked to learn that they will compete alongside their exes. In addition, introduction of the Diamond Power of Veto and the sequestered Jury.
Season 5
31 episodes · 2004
In this season's twists, there are two sets of pre-existing relationships in the house - secret twins and long lost siblings.
Season 6
30 episodes · 2005
In this season's twist, every houseguest enters the house with a secret partner - believing they were the only pair. If both can reach the end, the winner would receive a grand prize of $1,000,000 and the runner-up, $250,000.
All Stars
28 episodes · 2006
Fourteen of the best and most iconic Big Brother Houseguests make their return to compete for the $500,000 grand prize.
Season 8
33 episodes · 2007
In the season's twists, 3 houseguests are shocked to learn their "enemy" will be entering the game - ex best friends, ex-boyfriends, and an estranged father and daughter.
Season 9
33 episodes · 2008
In the season's twist, every houseguest would compete, be nominated, and be evicted as couples.
Season 10
29 episodes · 2008
Season 11
30 episodes · 2009
Season 12
30 episodes · 2010
Season 13
29 episodes · 2011
In the twist of the summer, three Dynamic Duos of iconic previous houseguests make their return for another chance to win - Dick and Daniele, Jordan and Jeff, Rachel and Brendon.
Season 14
30 episodes · 2012
In the season's twist, four previous houseguests return as Coaches to build a Big Brother dream team - a $100,000 prize awaits the coach who picks the Big Brother winner.
Season 15
36 episodes · 2013
Season 16
40 episodes · 2014
This season's twist brings about the Battle of Block - two HOHs, 4 nominations, and the chance of an HOH being evicted.
Season 17
40 episodes · 2015
This season brings back the iconic Twin Twist with two sisters swapping out every few days, unbeknownist to the other houseguests. The Battle of the Block makes it return.
Season 18
42 episodes · 2016
Season 19
39 episodes · 2017
Season 19's new twist is called “Summer of Temptation,” where the Houseguests will be challenged like never before as they embark on a season of tempting offers that could give them money, power and safety in the game. But, they will need to be careful, because for every temptation taken, there will be a consequence to face. This season's house reflects the temptation twist with words like Money and Revenge hanging on the wall, constantly reminding the Houseguests that the game never stops.
Season 20
40 episodes · 2018
Season 21
40 episodes · 2019
All Stars 2
37 episodes · 2020
Sixteen former Houseguests return to the game for a second chance at the grand prize of $500,000.
Season 23
37 episodes · 2021
Season 24
34 episodes · 2022
Season 25
42 episodes · 2023
It is the Summer of the BB Multiverse. Three former Houseguests enter the house and unleash four universes onto the house. The Comic, Humili, Scary, and Scramble-verses unlock new twists and themed competition.
Season 26
39 episodes · 2024
This season is the Summer of Artificial Intelligence. A.I. bots Ainsley and Jankie take over and introduce a brand new competion that changes the game - the A.I. Arena.
Season 27
39 episodes · 2025
This season is the Summer of Mystery as the Houseguests enter the Hotel Mystère, a place where secrets lurk behind every door and nothing is as it seems. This season celebrates the 25-year anniversary of the series as a whole.
