Monopolis: Geography

Monopolis is not an exceptional planet in terms of it's sun, orbit, size, composition or atmosphere, but the planet's surface is covered by a many-layered city. This world-city is populated by an estimated 100 billion intelligent beings supported by an ancient system of hydroponic agriculture that maintains the atmosphere and food supply.

Much of the city is unpopulated - most intelligent species live in the uppermost layers. The lower layers are remnants of previous historical eras and pre-historical civilizations. These abandoned layers can be physically unstable, but they are also dangerous because of the beings that make their homes down there.

Surprisingly, Monopolis has no "nations" and no government in the sense that most other worlds do. The Monopolis Trading Company has practically unlimited power over it's employees - over 99% of the world's population. The company controls almost every aspect of life. For example, there is no "money" system - only status within the company, written orders for supplies, and such.