- The level in room 25 of level 2 opens the gateway in room 60 of level 4.
- The lizard men in area B of level 3 are entertaining a minotaur ambassador from the medusa on level 5
- The painting shows the dungeon's architect as a young man, battling serpents while a gleaming platinum is within reach.
- You realize with a start that these are love letters implying a torrid affair between the current Bishop of Vorgrad and the Mother Superior of the local abbey.
- The book reveals a recipe for immortality, but it is not any herb or potion. Rather, it is the shocking heresy that the Gods were once mere mortals, who over long lives filled with heroic deeds accumulated enough virtu to ascend to the Outer Planes.
The Downstream Lever: A control or trick or puzzle in one area, opens or closes or activates or releases something in another area.
The Historical District: This kennel ... and this kitchen ... and this library ... all belonged to the Demonic Chef of Avalino, and bear his marks and signs.
War: The inhabitants of one area are at war with the other, hold captives and loot, and fortify the border between them...
Peace: ... or due to diplomatic or trade relations between them, letters, gifts, and envoys from the others are to be found.
I'm not sure if any other ideas of this kind exist but if so, post 'em up.
At this point the question has to be asked: what does this mean for the designer of modular dungeon pieces? Do you leave levers up and put a few blank spaces for the megadungeon assembler to note down what the lever does? Or do you leave it up to them to pencil in little notes? I think any kind of module should encourage and help out good practice, so I'm going to have explicit "dangling hooks" in the dungeon, which the user can freely connect to other sections. Likewise for the secrets of the dungeon, the political area and indeed the whole universe. I'll tell you how big the secret is, you fill in what it is and what the clue might be.