Hive World
The Imperium's pet name for its Arcologies, cities on the scale of mountains. Once a world gets one, it ends up building more until it is more-or-less covered in hives. Generally very shitty places to live, what with the gangs, and forcible recruitment for the Imperial Guard, and such.
You know that intro blurb? "To be a man in such times is to be one amongst untold billions. It is to live in the cruelest and most bloody regime imaginable." Yeah, that's life in a Hive World. Grimdark to the max.
See Also
- Necromunda, a Hive World and the setting of the tactical skirmish game of the same name.
- Terra, the Hive World to end all Hive Worlds, as humanity was born there.
- Forge World, another sort of world, dominated by manufacturing and research rather than residential construction.