Players now
0
newvs 24h ago ยท updates every minute
Last 7 days ยท history since Nov 1, 2026
Screenshots, achievements, specs, every price change and sale we've seen on Steam, and trading cards.
Loading from Steamโฆ
Steam prices for United States (change the country in the top bar), and Steam keys from authorized stores.
Checking other storesโฆ
Loading from Steamโฆ
Live from Steam
Loading reviews from Steamโฆ
Free on Steam. The demo has its own app, so its players are counted separately.
Turn on your camera. The Null Institute 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.
Live data from Steam, tracked by SteamPlayerBase.
What changed on Steam for this game since we started following it: prices and sales, builds, name, release date and review score.
No authorized Steam key store lists this game right now.
Games we track that share the most Steam tags with this one.
Not tested by Valve yet. Results from Valve's own testing.
Valve hasn't published test details for this game.
Every build released on Steam for this game since we started tracking it, with the developer's patch notes. Updated within minutes of each new build.
Update 1.06 โ Final UpdateThis update fixes several issues reported by players and includes a few small improvements to the user interface.ChangesFixed a critical bug in Stage 3 that could make progression impossible and prevent players from completing the gamโฆ