Dark Earth
A post-apocalyptic TRPG based on the video game of the same name, released during the 90s. It features the Earth, entirely covered with a dark cloud that morphed all lifeforms into darker and more dangerous versions of themselves.
Few pits of light persist, and they are called "Stallite" by those humans who still dwell there. The most prominent Stallite of the first edition of Dark Earth is Phenice, located on a volcano where the city's God - the Phoenix - managed the repel the Darkness. The city itself is structured in strata, with the poorer living at the feet of the volcano while the richest enjoy the proximity of its top, next to the light rays that pierce the dark clouds. A mixture of deeply mystic and religious elements tints all Dark Earth's adventures.