When the main lead meets different producers seeking for a directorial debut, the producers demand commercial, horror, drama content respectively. These producers had a commercial, horror or drama movie postures behind their back respectively.
Ratchasan was ranked at 2 in the IMDb Top Indian Movies of the year 2018.
Initially the movie was to be made with actor Jai and produced by CV kumar but both of them backed out.
The radio station is where the main lead finds an evidence about the psycho. The benches of the station are painted like a piano with black and red keys, instead of black and white keys. This is because the psycho is caught red handed at the scene.
In prominent thrilling scenes, there background score is used from "Interstellar (2014)" by Hans Zimmer.