Tumbbad became the first ever Indian film to open the prestigious Venice International Film Critic's week.
The movie was shot for six years. The scenes shown in the city of Tumbbad which gets rain throughout the year was shot over four monsoons.
Tumbbad, the city actually exists but the folklore is not present anywhere which is consistent with the theory that Hastar, the god demon would never be written about.
Film was shot at location where people had not visited for 100 years.
Mohammad Samad played two roles in the film. The first being Pandurang (Vinayak's son) and and the other being Vinayak's grandmother.