As the population boomed in the late Petroleum Era, there was a demand for more building, more homes, more businesses, more offices, and all competing for the same real estate
In which more methods are expounded by which one may refine a dungeon to more sublime levels of confusion.
This isn't nonsense--this is logic!
From Innsmouth to Cthulhutech, a common phrase is “non-Euclidean architecture”. But what is it, and how can it be included in your games in a way that is interesting and fun?
The player characters, experienced and somewhat well known, hear rumors and travelers' tales about a distant area being overrun by dragons (or other terrifying monstrosities). The locals have sent them a message, begging for heroic aid.
When they investigate, they discover that nothing of the sort is going on. It turns out that a group of thieves wanted them out of the way so that they could rob them (or someone who would normally receive their protection).