Mortos is a strange planet in the Paradise universe.
The surface temperature of Mortos is 15 degrees Celsius, and the atmosphere is 25% oxygen, 46% nitrogen, and 10% methane. The rest is trace gases. There are large oceans on the surface, covering 79% of the planet. Small continents exist near the poles, with various islands scattered about.
Absolutely no life exists on this planet, for unknown reasons. There is much speculation about the reason.
For unknown reasons, massive amounts of radiation and sulphur are present in the upper atmosphere.