A downloadable game for Windows

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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.

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.

Protocol: Umbra is still in alpha, and both the game and the UI framework powering it (Tessella, my graduation project) are evolving. If you’d like to help shape them, you can share your feedback in this form.

:)

Updated 1 day ago
StatusIn development
PlatformsWindows
Release date Oct 08, 2025
Rating
Rated 5.0 out of 5 stars
(1 total ratings)
Authorcuait
GenrePuzzle
Made withAseprite, pygame, Audacity, MagicaVoxel
TagsHorror, Indie, Low-poly, Prototype, Psychological Horror, Retro, Short
Average sessionA few minutes
LanguagesEnglish, Spanish; Latin America, Portuguese (Portugal), Portuguese (Brazil)
InputsKeyboard, Mouse

Download

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Click download now to get access to the following files:

ProtocolUmbra_v0.8.1-alpha.zip 55 MB
ProtocolUmbra_v0.8.0-alpha.zip 55 MB
ProtocolUmbra_v0.7.0-alpha.zip 61 MB
ProtocolUmbra_v0.6.0-alpha.zip 56 MB
ProtocolUmbra_v0.5.1-alpha.zip 56 MB

Development log

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