Kulupu Kin (5e Environment)
From D&D Wiki
The Jahns' original homeworld. Known for its purple skies and central Jahn hivemind. It consists of mainly industrialized city areas with depleted natural resources. This inspired the Jahns' intergalactic conquest and planetoid harvestion and assimilation.
As the Jahns operate in hives, they have one chosen dictator, who lives within the Lawa Kute, which is essentially a giant radio tower of interplanetary Jahn communication. This takes advantage of Jantennaeic Pheromones to spread messages to the public, sometimes even chemically altering their emotional states to be more "agreeable". It can also send private messages to specially designed communicators. Cities consist of large apartment complexes and some store things, not far off from most cities on Earth. The only thing is, there are no "houses". Only apartments.