Prognostic invites the player to play the role of a detective and investigate a mysterious case filled with supernatural elements and terrifying events. The main character will master a number of realistic mediumship practices, which will allow him to predict the future and look into the past. Such abilities provide assistance in solving a mysterious case. Gradually, the skill of changing time will improve and discover new talents.

The user takes control of an orphan whose family died under unknown circumstances. It all starts with the main character returning to his grandmother's house to take over her legacy and become a seer like her. The main goal of the protagonist is to find out exactly how his parents died before the summoned forces find him first. Unknowable forces have returned to the world of the living to find a guy who must pay them the price, but he needs to have time to find out the reasons for the death of his relatives.

The gameplay includes horror genre elements with terrifying locations to explore, jump scares, scary sounds and phenomena. The user will have to open the rooms of a huge house, unlocking access to previously unexplored methods of fortune telling and the secrets of his own family. The plot is filled with side stories with dark secrets and mysteries that are revealed as you explore the environment and achieve the goals of the ward.