About
A terminal-driven psychological horror puzzle set in a secret Soviet underground research facility built after the 1986 Chernobyl disaster. Survive in procedurally shifting sectors using only the terminal. Type ‘help’ to begin.
Pre-release · Steam · App 4250500
Protocol 86: Chernobyl
Core Interactive
Genres
AdventureIndieSimulationStrategy
AdventureIndieSimulationStrategyview more (+4)
Categories
Single-playerCamera ComfortPlayable without Timed InputStereo SoundFamily Sharing
Single-playerCamera ComfortPlayable without Timed InputStereo SoundFamily Sharingview more (+5)
Player tags
Psychological HorrorHorrorHackingSurvival HorrorCold WarPuzzleThrillerTypingExplorationAlternate HistoryHistoricalMystery1990'sInvestigationFemale ProtagonistAtmosphericStory RichProgrammingReplay ValueImmersive Sim
Psychological HorrorHorrorHackingSurvival HorrorCold WarPuzzleThrillerTypingExplorationAlternate HistoryHistoricalMystery1990'sInvestigationFemale ProtagonistAtmosphericStory RichProgrammingReplay ValueImmersive Simview more (+20)
Followers
38
+0 · 1d
Wishlists est
873
Price
—
Release
Coming soon
tba
7 snapshots· cumulative
+12 (+46.2%)
DayFollowersΔΔ %WishlistsΔΔ %
Jun 24, 20263800.0%87300.0%
Jun 23, 202638+2+5.6%873+44+5.3%
Jun 22, 202636+2+5.9%829+44+5.6%
Jun 21, 202634+3+9.7%785+66+9.2%
Jun 20, 202631+4+14.8%719+88+13.9%
Jun 19, 202627+1+3.8%631+22+3.6%
Jun 18, 202626——609——
Tracked since May 6, 2026·Details 19h ago·Followers 11h ago