Yoshi
Discover Features Support
Discover Features Support
Download for iOS
Protocol: Umbra

Protocol: Umbra

2026-05-08 • Puzzle, Simulator, Indie

Open in App

Overview

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.

Details

Genres
Puzzle • Simulator • Indie
Game Modes
Single player
Player Perspective
First person
Platforms and release dates

PC

2026-05-08

Game Engines
Pygame
Developer/Publisher
cuait

Trailers

Protocol: Umbra YouTube
Protocol: Umbra Teaser
Yoshi

A personal game library for discovery, backlog, collections, and events

Legal

  • Terms of Use
  • Privacy Policy
  • Licenses

Updates and feedback

  • Connect on X
  • News and Updates
  • Suggest an Improvement
  • Report a Bug

Contribute

  • Support Yoshi
  • Boosty
  • Crypto donation

© 2026 Yoshi

App Store