If you were to look at what a psychic medium does—someone who uses ESP to, well, perceive extra-sensory things—then The Medium makes a lot of sense. You've got two worlds. You've got a main character that traverses the two. There's something of an overworld (existing in 2084), and something of an underworld (existing when it's hell on earth, presumably).
This video for The Medium reveals nine "uncanny" facts about the game and its development. Bloober Team (Layers of Fear, >observer_) has carved out a nice place for itself in the video game horror genre. With concept art for The Medium first surfacing in 2012 for the Xbox 360 and PlayStation 3, The Medium has undergone a lot of changes, though the concept of two parallel worlds running in tandem was always there from the beginning. Troy Baker shows up as something with a disturbing voice called The Maw. It takes place in Poland, led by a couple Polish actors, exploring a real-world hotel in Poland, a hotel with that Eastern Bloc sensibility to its architecture. Which means the place is kinda blocky and kinda spooky, even in broad daylight. It also starts right off in a real-world apartment building in downtown Krakow (pronounced , Poland.
The Medium launches this week on January 28 on Xbox Series X|S and Windows PC, and will be on Xbox Game Pass Ultimate (including the PC side) on day one, too.