* CashCowFranchise: At least until the bottom fell out of the adventure game market in the mid-late '90s, taking Sierra with it. It typically got first dibs on any new technology as a result, which could be either a blessing or a curse depending on the game.
* FanNickname: Among fans, the games are almost exclusively referred to as "KQ [roman numeral/#]"
* TheOtherDarrin: Each member of the Royal House of Daventry has had at least more than one voice actor. Graham (Josh Mandel in KQV, KQVI, and the AGI fan remakes, Danny Delk in unused audio from KQVII, Creator/DaranNorris in Mask of Eternity, Creator/ChristopherLloyd and Creator/JoshKeaton in A Knight To Remember), Alexander (Barry T. Smith in KQV, [[Disney/BeautyAndTheBeast Robby Benson]] in KQVI), Valanice (Sheryl Bernstein in KQVI, Carol Bach y Rita in KQVII, Creator/KathSoucie in A Knight To Remember), and Rosella (Diana Wilson in KQV, Bernstein in KQVI, Maureen [=McVerry=] in KQVII). Cassima can also count [[spoiler:as a new member of Graham's family]], since she is voiced by Dianah Pressley in KQV, and Louise "Stevie" Vallance in KQVI.
* WhatCouldHaveBeen:
** Sierra was planning remakes for the rest of the early VideoGame/KingsQuest games, but the [[TheyChangedItNowItSucks negative reaction]] from the fanbase to the VideoGame/KingsQuestI remake caused them to reconsider. That didn't stop them from doing remakes of other first installments of their popular series, including VideoGame/SpaceQuest and VideoGame/LeisureSuitLarry.
** ''Creator/TelltaleGames'' at one point was attached to the franchise, planning on an episodic {{Revival}}, but [[ScrewedByTheLawyers rights complications]] prevented it from happening. Despite this, the 2015 entry is planned on being episodic as well.

!!The books provide examples of:

* ApprovalOfGod: At times the official canon makes references to material from the books, in manuals and hintbooks, some of the ''King's Quest Collections'', the ''King's Quest'' trivia game "King's Questions", and Sierra's ''Interaction Magazine''. The manual for ''[=KQ6=]'' even utilizes Derek Karlavaegen as the author of that manual. Roberta Williams has also endorsed ''VideoGame/TheSilverLining'' and ''A Knight To Remember''.