* 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/#]"-- with the exception of "Mask of Eternity." Fans generally call it "[=MoE=]", both because it's not ''officially'' numbered (see NumberedSequel in the Main tab) and because it's [[FanonDiscontinuity the series' Scrappy]].
* TheOtherDarrin: Out of all four members in Graham's family, only Graham himself has not changed voice actors; the other three members are voiced by different numbers of actors: Alexander (Barry T. Smith in KQV, [[Disney/BeautyAndTheBeast Robby Benson]] in KQVI), Valanice (Sheryl Bernstein in KQVI, Carol Bach y Rita in KQVII), 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.