Spiritus Sancti

Spiritus Sancti is a first-person psychological horror game with themes of ritual, faith and the spoken word. The player takes the role of Father Nathaniel, a young priest sent to look into a suspected possession in a small apartment on Vayra Street. The visit begins as a routine investigation but develops into a more dangerous situation.

The core mechanic is voice input. Using a microphone, the player speaks invocations aloud in order to repel the demon, reduce its influence and survive the encounter. The language of the ritual is the character’s only means of defence.

The game also features an entity that is described as learning and adapting during play, meaning that relying on the same approach may not be sufficient. The setting is confined to a single apartment, and the experience is built around tension between the priest and the presence within it.