
Sunless Sea is set in the Unterzee, the name for the ocean in the Neath. Sunless Sea īecause so many people liked Fallen London, Kennedy and his company Failbetter Games decided to make a new game set in the Neath. Some of them liked it so much they gave it awards. He wanted to do something different, but still be a browser game. In 2020, in a quote from his book Sex, Lies, and Videogames (which was not yet published), Kennedy said the game was meant to be a different kind of game like them. People play browser games in their web browser, rather than downloading it on their computer or buying it from a store. It has also been compared to Romanticism, a style of art from the 19th century about feelings, imagination, and freedom.

Fallen London has been called a horror game.

In the game, the city of London was taken down under the ground by strange bats and put in an underground world called the Neath, where it is always nighttime. Fallen London is set in a world where Victorian England was different to the real world.

In 2009, Kennedy made a game called Fallen London.
