The game is set in a fictionalized version of the 1920s, and what would be more 1920 than an Art Déco?

The style is often used by games, especially for 3D. But very often it is reduced to the design of interior and objects only, while keeping characters in another style.

Dev Diary 1 Inspiration and early phases of the project What is Sanatorium? Thriller, Horror …an adventure through a fictional version of early 20th century mental care and pseudo-science. The game is