Tromus

Tromus is the home planet of the Iruk. Once a lush planet covered with forests and oceans, the Iruk swarmed the planet with metal and concrete. Tromus's population of Iruk is approximately 12 billion.

Tromus has no moons, but the Iruk built an artificial satellite named Ree. Ree is currently being used as a residence for richer Iruk and a communications unit.

Geography

Tromus is 718km in radius. The day length is 48 hours, and the year length is 770 days.

The tallest point is the Runi skyscraper.

Surface level streets of Tromus

The climate is generally dry and polluted, with an average temperature of -15 degrees Celsius (5 degrees Fahrenheit).

The atmosphere is purple with black clouds.

Skyscrapers

Tromus has no regulation on building height, and the vast skyscrapers which cover the planet can be seen as a jagged outline from space. It is estimated that 10% of the planet's weight is from skyscrapers.

A sewer entrypoint offers a hopeless journey to naïve explorers

Sewers

A creature found in the Tromus sewers. It is thought to be a descendant of the animals that used to dwell on Tromus.

Tromus has a vast network of tunnels beneath the city supplying much-needed infrastructure to the inhabitants above. The Tromus sewers are a complete maze of interlocking passages that go right through the planet's interior. Getting lost in the tunnels offers slim hope of ever finding a way out.

The sewers are filled with strange and dangerous creatures that have adapted to life in the sewers. The tunnels are also plagued with Deletion Goo, a hazardous substance that seeks to consume any lost sewer explorers.