The Subject: Protocol Zero
Scratch catalog
Screenshots & trailers
6 media
Switch thumbnails to browse storefront screenshots.
1 / 6
Primary storefront actions
About this game
Turn on your camera. The Kessler Foundation is paying for your pain. The game uses your webcam and microphone, turning the room into a lab. Complete four stages: from the blink ban to the "Green Light, Red Light" game. Money or sanity? Be the first to complete Protocol Zero. If you dare.
System requirements
PC storefront requirement matrices are shown for the Steam / PC tab. Switch platform above for console release context.
Rarest achievements
Achievements unavailable for this source
This catalog entry does not have a Steam app mapping yet.
Game Snapshot

Platforms
Community rating
Critics rating
Game modes
Player perspective
Keywords
Age ratingRating unavailable
Languages
Language support isn’t summarized on this overview yet.
- Release · PC (Microsoft Windows)
- Worldwide — Mar 10, 2026
Community discussion
Sign in to join the conversation when comments launch.