Here is a very small preview of one of the levels for Crania Souls.
This is a city of the underworld, it is known as a city eaten by darkness, 99% of the entire city is covered in darkness, and a lot of unspeakable acts occur in it's dark streets, horrible crimes, but also wild demonic orgies at every corner, extreme parties and consumption of dangerous substances. It is for some one of the most fun cities in the underworld.
This is a bit of the lore of the level and it relies on your imagination, as you are only allowed to walk on the illuminated areas, if you enter the darkness Crania won't resist the fun of the city and will stay there for a while before returning to the light, then she will comment how much fun she had for hours. After all, despite being a mature Goddess she still enjoys having wild fun.
Despite being a very dangerous city it does have one of Crania's favorite spots to get some food.