Contestants are required to evict one of their own on a regular basis ; in the earlier series of Big Brother, contestants were evicted every two weeks, however, as introduced in the UK version, evictions occurred once a week, all of the current series of Big Brother follow this format.

Contestants faced questions fired at them by a panel of four sports and entertainment celebrities for two minutes ; like Mastermind, there were two rounds of questions, however slightly different: The 1st round had each panelist's questions representing a different sports category pertaining to their area of expertise, and the 2nd round had no categories and the contestant couldn't control who asked the questions ; they were fired at random.

Contestants for the Prix were assigned a theme from the literature of Classical Antiquity ; their individual identities were kept secret to avoid any scandal of favoritism.

Contestants were asked to predict how many of those 100 people responded in a specific manner.

Contestants were also given " Clip Chips ," which allowed them to replace a card if they correctly guessed the outcome of a video.

Contestants were originally allowed to change cards at will ( even three times on one card ), but the rules were changed to one card per line in early 1986.

Contestants who used such calculators were often called " Curta-crankers " by those who were limited to paper and pencil, or who used computers linked to the car's wheels.

Contestants " in the house " who did not make the final five were Geoff Brown, Tere Joyce, Sean Kent, Dave Mordal, and Rob Cantrell.

MTV could only afford one square instead of nine, but otherwise the rules were unchanged: Contestants still had to get the X across, down, or diagonally.

Contestants who were successful at their challenges were rewarded with the coveted " GamesMaster Golden Joystick " trophy.

Contestants were required to perform tasks ( called " problems ") within a certain time limit which was counted down on a large 60-second clock.

Contestants were chosen from the studio audience and usually were married couples ; other pairs were engaged, dating, or were a familial relationship.

Contestants were introduced by the announcer, and prizes and gifts were presented by the other assistants.

Contestants Bunny and Xy were axed from the program in controversial circumstances.

Contestants were told the time for the Lightning Round, however, unless they measured it themselves, they could not tell how much time was left in the round.

Contestants were required to select at least one answer before passing control.

Contestants would win a new car as a consolation prize if they had reached the $ 8, 000 question.

Contestants who " Whammy out " in this way cannot return on the next show, even if all other contestants end with a score of $ 0.

Contestants could win up to $ 32, 000 on the 1980s series ; the highest amount won was $ 29, 000.

Contestants on the 2001 edition could win up to $ 51, 800.

Contestants requiring a minimum risk compensation of less than $ 300 will choose a door instead of accepting the guaranteed $ 500.

Contestants continued on the show until defeated ; some repeat champions won more than $ 25, 000 in cash and prizes.

Contestants kept whatever they earned while still retiring after winning $ 25, 000.

Contestants drew numbers to determine who spun the wheels first — and, in the $ 1, 000, 000 tournament, also which game of each round the contestant would play ( odd numbers spin first, even second ).

Contestants in the tournament won a grand total of $ 5, 604, 413 ( US ).

Contestants again took turns revealing a chosen blank and guessing the puzzle until one guessed correctly, won the extra $ 250 and the game.

Contestants compete for a total of $ 86, 000 in prize money.

Contestants were awarded $ 100 for each number removed from the board.

Contestants who made it to the bonus round in season two later returned to compete in a tournament with a top prize of $ 250, 000.

( The now celebrity ) Contestants can win £ 10, 000 for getting over 200 points in " Big Money ", increased to £ 30, 000 for getting all five top answers.

Contestants cannot be required to start a run from an off-center alleyway, but contestants are not allowed to enter the arena and " set " the horse.

Contestants individually complete this round in an isolation booth referred to as The Kube and their heart rates are also measured while they take this test.

" Contestants had 20 seconds to ring in and answer as many questions as possible ; after this round, the TV immediately went " Off the Air " and the third-place contestant was eliminated.

Contestants were given a base time of 35 seconds to play the round, with five seconds added for each time the round was not won.

Contestants come in teams of up to five persons, and have two or three teams quizzing in a round.

Contestants have regularly scheduled interactions with the show's host on eviction nights.

Contestants competed to find words on a grid that was similar to a word search puzzle that served as answers to questions asked by the host.

Contestants who became champions of the Tyne would often challenge the corresponding champions of the River Thames, and the race would be arranged to take place on one of the two rivers.

Contestants would be given ninety seconds to answer five general knowledge questions asked by Davidson.

Contestants would then be falsely encouraged and praised by the judges as well as the stylists, choreographers and vocal coaches ; in particular, they would be encouraged to try and stretch their vocal range far beyond what they could actually reach.

Contestants who chose this option were often invited to take an unofficial spin to see if the Devil would have come up next.

Contestants would have to do the traditional Bop It tasks, but as an added challenge, " Stomp it " and " Chomp it " were made.

Contestants would sing and their performance would be assessed by judges present at the show itself, and also by the public.

Contestants ( two in the Serling era, three in the Ludden era, and four in the Armstrong and Boardman eras ) would guess which star was telling the true story.