Ruka Atmosphere: Thick atmosphere, breathable with a pressure mask Temperature: Temperate Biosphere: Human-miscible Population: Several million inhabitants Tech Level: TL4 Description: Homeworld of the Dhinkaid. Geography Ruka, while temperate, is covered in mushroom forests and mossy grasslands. Some other tall plants grow with twisting stems and bulbous ends, but the general sight on Ruka is incredibly different from what many people are used to. Lakes and rivers are filled with oily liquid, and the skies burn red in the day, and glow green at night. Fauna & Flora Most of the fauna on Ruka is reptilian and airborne, with a few exceptions in the animals that live in the black lakes and rivers of the planet and one or two insect like mega fauna.