Trivia: King's Quest: Mask of Eternity
- Creator Killer: This was Roberta Williams' last game, and was also a creator killer for Sierra as an adventure game company.
- Executive Meddling: Its still unknown who added the hack-and-slash elements on the game, some sources claim Roberta herself added them to try to evolve the series, while other sources say higher-ups forced Roberta to add it to try to compete with other games like The Legend of Zelda: Ocarina of Time.
- Franchise Killer: The details are still hotly debated. The old fans hated the required action, which stood in such contrast to the series' previous position on violence. However, it supposedly sold much better than true adventure games of the same time period.
- Hey, It's That Voice!:
- Keep Circulating the Tapes: This game (which did eventually get on GoG) wasn't in the Compilation Rereleases of King's Quest, perhaps owing to the game's dubious standing among the series fans, making it a case of Canon Discontinuity.
- What Could Have Been:
- Some areas were cut for time constraints. The Swamp Witch was supposed to play a larger role, first appearing as a beautiful woman and trying to seduce Connor, instead of immediately attacking in her real, hideous form. A redcap goblin was scrapped that would have stalked Connor around and Connor himself was at one stage a statue who came to life while everyone else was petrified.
- Another version of the game was to be made by Davidson, the creators of Math Blaster. Founder Jan Davidson, offended that a game like Phantasmagoria could sell well and seeing how violent Mask of Eternity was looking to be, coerced CUC Software, the company that owned both Sierra and Davidson at the time, to allow them to make their own version that was more Christian-friendly, removing all violence and combat in the game. Roberta, feeling like she had lost control over her game, almost left the game's development entirely. It wasn't until Davidson leaving the gaming industry that Roberta came back but the damage was done and a bunch of stuff was cut due to lost time.
- Many King's Quest fans feel that Mask of Eternity was an unsatisfactory conclusion to the series, both because of its radical Genre Shift and the fact that it had little to nothing to do with the rest of the series. The end product turned out to be radically different from original designs. The main character would have been a statue that had come to life rather than a village tanner, some characters (such as the swamp witch) had much larger or entirely different roles, and the game world was a lot lighter and cheerier, matching the rest of the series more than the darker final product. And one can only imagine what could have happened if the game had stayed as a lighthearted point and click adventure like the rest of the series rather than the Darker and Edgier hack and slash RPG it ended up as.