|The cross section of my next megadungeon?|
Instead, I'm talking about a location that's known for being the site of a crashed starship--a huge structure with weird artifacts, valuable treasure, and strange creatures. I was inspired by reading a story that takes place during the Man-Kzin Wars in SF author Larry Niven's setting of Known Space. The story from Man-Kzin Wars Vol. XI, "Grossgeister Swamp" by Hal Colebatch, describes a McGuffin search through a battlecruiser that crashed in the middle of a vast wetlands. There are dangerous animals in the marshes, and the Kzin ship contained critters of its own (which the feline race hunt for food and sport).
I can picture a crashed super galactic dreadnought from one of the Five Powers. It could still hold survivors (either active or in cold sleep) from the crew and from hostile boarding parties. Throw in native species, wandering robots with varying amounts of damage, automatic defenses, reactor leaks, strange science experiments, and arcane technology, and you have the makings of a classic megadungeon. And you wouldn't even have to set it on a fantasy world; such a location could turn any sci-fi roleplaying game into a megadungeon campaign if the players and referee so desire.
This seems like a fun campaign setting. Someone needs to create this, so I don't have to :)