I was responsible for designing overall look and basic principles of the Spirit World in The Medium game and this was one of the toughest task I ever had. I'm really happy and proud of how it looks at the end. Big thanks for everyone at Bloober Team art department for bringing this to life. Art directing by Mateusz Lenart. As you can probably tell the main references for this were paintings by Zdzisław Beksiński.
https://www.artstation.com/hassler
https://www.artstation.com/zuczus
https://www.artstation.com/michalm
Also game soundtrack by Arkadiusz Reikowski and Akira Yamaoka fits perfectly here.