- Awesome Music: No matter what you think of the game, you have to admit the main theme is awesome.
- Contested Sequel: When it was new, the only evidence that it was a contested sequel and not outright Fanon Discontinuity was its sales. Nowadays, it's easier to find people who will openly admit to liking the game. In fact, even the contention usually revolves more around whether being so different from the rest of the series is impossible to forgive, rather than whether it's a fine game in a vacuum. Still, if you go to a Sierra fan board and ask if it's a King's Quest game, then ask them if it's a good game, make sure to bring chocolate, marshmallows, and graham (no pun intended) crackers for the inevitable cookout.
- Deader Than Disco: Believe it or not, when the game first came out, it sold reasonably well, even outselling Grim Fandango, and earned modest scores from gaming magazines, mostly 7/10s. After Sierra went under and the adventure game market crashed, everyone turned on the game, now labeling it as the game that (temporarily) killed off the adventure game genre. The bundle on GOG.com does sell pretty well, though (although it will vary person to person whether this game or King's Quest VII: The Princeless Bride is the main attraction and which is the add-on).
- Fanon Discontinuity: The fandom does not especially like this game. This game is largely ignored and/or derided by the fanbase as In Name Only, due to its drastic change in tone, reliance on violence in a series that usually rewarded you for thinking your way out of the situation, and a protagonist that wasn't a member of the Daventry Royal Family.
- Good Bad Bugs: Scaling a wall with the rope and hook in the Underground Realm of the Gnomes could result in Connor ending up on the other side of the walls bordering the level. Weirdly, it wasn't just an empty wasteland - there were rocks lying around that could be picked up and zombies to fight.
- Memetic Mutation: "'Tis beyond my reach!" variations on this pop up in the Fan Remake of King's Quest II: Romancing the Throne and The Silver Lining.
- Mis-blamed: The game itself was blamed for killing the adventure game genre, but trouble with the company and a shifting industry had far more to do with it. Also, while the game remains obscure enough to not be fully Vindicated by History, many who look back on it now see it in a different light. The rest of the King's Quest series, while still looked back on fondly, is now acknowledged to have more or less made the fall of the adventure game genre inevitable from the beginning, due to wildly inconsistent quality and loads of Fake Difficulty. Mask of Eternity's gameplay, in hindsight, has noticeably more modern standards of balance and fairness.
YMMV / King's Quest: Mask of Eternity