For Abandoned Pools to refer to the setting of their previous Entry and establish some casual continuity/worldbuilding is the type of shameless nerd-baiting that I tend to fall for more often than not, and here I have fallen for it hard. My eyes sparkle dreamily as I wonder whether Absalome Pilcrow is the same traveller from "Antique Panzitoum," or else where on the Panzitoum Timeline the two stories fall. (The repeated use of the same initials is another type of shameless nerd-baiting that I tend to fall for more often than not.)
Even considered on its own, "Old King Nebb" refers to multiple layers of history, which contributes greatly to the Sense of Place in IF that I am forever seeking to perfect. The world is convincingly dusty and drowsy, but it remembers when the castle was much more active, and it remembers further back, before the castle was built. The map itself is arranged with organic disorder and a cozy attention to scale. In one room, you get a glimpse of the aquarium through a window; if you navigate the map correctly, you get to see the aquarium up close. When I put it that way, it sounds tautological, but the textual environment is powerfully enriched by the decision to include details that in visual experience we take for granted.
The continuity and the coziness are assisted in large part by text describing the player character's movement from room to room. Really, the coziness is off the charts here.
And I am reassured that by focusing on this coziness, the Abandoned Pools have eschewed the distasteful elements of "Antique Panzitoum," so that we are not forced to contemplate gruesome orgies or lurid murders or anything along those lines. Abandoned Pools and King Nebb have suppressed their visceralities, and instead focused their energies on crafting a pleasant place in which I may feel the warm sun on my skin and play with a cat. Therefore I award "Old King Nebb" 18.4 points out of 20.