[[quoteright:175:http://static.tvtropes.org/pmwiki/pub/images/The-Krypton-Factor-001_1369.png]]

->"Welcome to The Krypton Factor, television's toughest quiz!"
-> Gordon Burns

British GameShow, launched in 1977 and run until 1995, then revived in 2009. Known for its comprehensive approach to testing its contestants, through its varied rounds testing Mental Agility, Response, Observation, Physical Ability, Intelligence and General Knowledge. Conveniently, these were the names of its six rounds for the bulk of the series' run.

The rounds are scored with 10 points for a win, 6 points for second and 4 & 2 for third and fourth respectively, with the exception of General Knowledge, where two points are awarded for geting a question right, and one is deducted for getting it wrong.

The format was re-sold to the United States and New Zealand.
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!!This series provides examples of:
* CallARabbitASmeerp: It isn't 32 points, it's a Krypton Factor of 32.
* CatchPhrase:
** From Gordon Burns: "Are you all ready, contestants? The test starts... now." and "That's it - the end of the round, the end of the contest..." (or "That's it - the end of the round, but ''not'' the end of the contest!" if two or more contestants were level at the end of General Knowledge).
** From Ben Shephard: "Activate the [[XtremeKoolLetterz Kube!]]"
* ColourCodedArmies: Red, Green, Yellow, and Blue for the four contestants.
* EarlyInstallmentWeirdness: Multiple examples:
** The first series featured a Personality round in place of Mental Agility.
** The Response round wasn't added until 1986, and even then, the airplane test wasn't used for all episodes until 1988.
** Until 1986, when specially made clips began to be used, the Observation round used a clip from an ITV drama series or recent movie. In addition, the round ended with an "Identity Parade", in which the contestants had to identify an actor from the clip out of a lineup of nine.
** Staggered starts were used in the Assault Course, as opposed to simply giving a head start to female contestants.
** General Knowledge, in addition to the standard SpeedRound, opened with three questions to each contestant from a specific category for two points each.
* GoldenSnitch:
** Even if you come last in all the prior rounds, if you can play a blinder in General Knowledge, you can score enough points win the game- increasingly so as the series seems to be [[TheyChangedItNowItSucks shedding rounds]].
** The Super Round in the 1995 retool. Instead of deciding the winner, the points gained are used to buy "advantages". You can bomb on all the rounds including General Knowledge and come out the winner by getting to the top of Mt. Krypton first.
* HiddenObjectGame: Observation.
* IncrediblyLamePun: Burns would often crack one after the end of Intelligence.
* LongRunners: The Burns version was on from 1977 to 1995. Averted for the Shephard version -- it only lasted two series.
* LovelyAssistant: Penny Smith in the 1995 retool.
* NintendoHard: The Intelligence round. What was shown was edited for time -- some puzzles took ''hours''!
* NoFairCheating: In the 1995 version, a contestant broke the rules of the "Response Revolve" in the Super Round and got DQ'd immediately after "finishing" it. Related to...
* NonGameplayElimination: In the 1995 Super Round, all tasks must be completed before moving on to the next. Otherwise it's a DQ.
* OnlySmartPeopleMayPass: Skip to 1:15 of [[http://www.youtube.com/watch?v=UPhLlgs1Htw this video]] for the first round of the 2009 revival. The old version was harder.
* RealSongThemeTune: Almost. [[http://www.youtube.com/watch?v=P2bFbjpF4cs The most well-known theme song]] is a rearrangement of the Art of Noise's "Beatbox".
* {{Revival}}: On hold because host Ben Shepard is working at Sky Sports.
* TheRunnerUpTakesItAll: In the semifinals, the fourth contestant is always the highest-scoring runner up. It's also possible in series without a Group D since the fourth player in the Grand Final would then be the highest-scoring runner up from the semifinal level. One of the most notable examples was 1990 series contestant Duncan Heryett, who finished second in his heat ''and'' second in his semi-final, and had to compete in an offscreen playoff with the joint highest-scoring runner up to advance to the Grand Final. Heryett was visibly gobsmacked when Gordon Burns announced him as the Grand Final winner.
* ShoutOut: The show's title is a reference to {{Superman}}'s home planet.
* ShowTheFolksAtHome: During the "Two Takes" and "Continuity Differences" versions of the Observation Round, Gordon would point out the answers to the home audience while the contestants were handing in their answers.
* SoundProofBooth: Only headphones were used in Burns' run, it is replaced by a booth known as the Kube in the Ben Shephard version.
* SpeedRound: The General Knowledge round. Depending on the series, the round lasted for between 60 and 100 seconds.
* TransAtlanticEquivalent: Two versions in the US (an adults version hosted by Dick Clark that Burns called "more akin to ''ItsAKnockout''", and a kids version that teetered close to being InNameOnly), and a more faithful version in New Zealand.
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