Protocol: Umbra
PC (Microsoft Windows)

Protocol: Umbra

#Puzzle

About

Protocol: Umbra is an unsettling, observation-driven psychological horror game inspired by I’m on Observation Duty and FNaF, built in Python with Pygame-CE and powered by my own UI framework, Tessella.

Storyline

You are the AI of a spaceship orbiting a mysterious celestial body at the edge of the solar system. While the crew sleeps, you stay awake - watching through cameras, monitoring the vessel, and searching for anomalies. At first, it’s only small things: a misplaced object, a door open when you’re sure it was closed. But the longer you observe, the stranger everything feels - until you can’t trust what you’re seeing.

Playtime Estimates

We are still calculating playtime estimates for this game. Check back in a moment.

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Languages

LanguageSupport
EnglishInterface
Portuguese (Brazil)Interface
Portuguese (Portugal)Interface

Similar Games

Game Info

Release Date5/8/2026
Developercuait
Publishercuait
PlatformsPC (Microsoft Windows)
GenresPuzzle, Simulator, Indie

Game Modes

Single player

Themes

Horror

Perspectives

First person

Release Dates

PC (Microsoft Windows)Oct 8, 2025
PC (Microsoft Windows)May 8, 2026