History Main / FairPlayWhodunnit

** ''VisualNovel/DanganronpaTriggerHappyHavoc'' breaks Rule 3 (there are hidden rooms and corridors in Hope's Peak, several of whom the game master hides from you), Rule 4 [[spoiler:in order to maintain the ontological mystery of why and how you've been trapped in the school to begin with; it involves mind control/memory-altering technology that has not been established from the beginning of the game]], and toes Rule 6 as Makoto's good luck is the reason he attended Hope's Peak in the first place, and it occasionally tosses him a bone. [[spoiler:Rules 8 and 9 are also completely broken, since the PlayerCharacter's Watson ''is'' an actual detective and repeatedly finds clues Makoto can't see and hides her deductions from him. And, of course, it ''completely'' breaks Rule 10; the "Junko Enoshima" who got killed early on was actually the unmentioned twin sister of the ''real'' Junko; while the notion that there ''was'' an extra student was introduced early, it was never hinted that the extra was Junko's twin. Junko even complains about how cliche the secret twin trope is when she's explaining what happened.]]

* Mike W. Barr's ''ComicBook/TheMazeAgency'' series revolved around a beautiful ex-CIA agent who runs a PI firm, her true crime writer fiance, and the (usually fairly clued) mysteries they run across.
* A number of ''Franchise/{{Batman}}'' comics, particularly during the Denny O'Neill/Neal Adams period in the '70s, provided fair-play mysteries. The narration would even challenge the reader at one point, once all the clues were presented to solve the crime before Batman.

* There are games one can purchase where the players play the character in a Fair Play Whodunnit, with costumes encouraged. How To Host a Murder is the most well-known, but not only, line. It's like a do-it-yourself of the bed and breakfast whodunnits.

** ''VisualNovel/DanganronpaTriggerHappyHavoc'' generally follows the decalogue, though it toes Rule 6 as Makoto's good luck is the reason he attended Hope's Peak in the first place, and it occasionally tosses him a bone. [[spoiler:And of course, it ''completely'' breaks Rule 10; the "Junko Enoshima" who got killed early on was actually the unmentioned twin sister of the ''real'' Junko; while the notion that there ''was'' an extra student was introduced early, it was never hinted that the extra was Junko's twin. Junko even complains about how cliche the secret twin trope is when she's explaining what happened.]]

** Most importantly, [[spoiler:the first commandment is broken entirely. The culprit turns out to be a former communist revolutionary hiding on a nearby island. While his existence is vaguely foreshadowed at several points, he is otherwise a StrangerBehindTheMask who only appears in the game's finale]].
** When it comes to supernatural elements, [[spoiler:the second commandment is similarly broken, with [[MaybeMagicMaybeMundane supernatural ambiguities]] throughout the entire game.]]

** The fifth and ninth commandments are broken with your partner, Detective Kim Kitsuragi, who is a descendant of naturalized citizens from a FantasyCounterpartCulture. He plays a central role as a TheStraightMan to your DefectiveDetective and breaks the ninth commandment by being a heroic and competent detective, though being a ByTheBookCop keeps him from certain insights and logical leaps that can propel the investigation forward.

** The seventh commandment, is technically followed with regard to the actual murder you are investigating, [[spoiler:but a lot of the clues you pick up have nothing to do with the case, and have to do with the drunken bender that put the detective in the situation to begin with.]]

In 1928, the writer Father Ronald Knox created a "Ten Commandments" of plot devices (''Knox's Decalogue'') that more or less codified the rules of the Fair-play Whodunnit: