Creator Killer: This was Roberta Williams' last game, and was also a creator killer for Sierra as an adventure game company.
Executive Meddling: Roberta Williams, the game designer, said that the hack-and-slash elements were pushed on the game, to make it more in keeping with popular games of the 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.
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.
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.