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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
Categories
Single-playerCamera ComfortPlayable without Timed InputStereo SoundFamily Sharing
Player tags
Psychological HorrorHorrorHackingSurvival HorrorCold WarPuzzleThrillerTypingExplorationAlternate HistoryHistoricalMystery1990'sInvestigationFemale ProtagonistAtmosphericStory RichProgrammingReplay ValueImmersive Sim
Followers
38
+0 · 1d
Wishlists est
873
Price
—
Release
Coming soon
tba
Followers history
29 snapshots· cumulative· 4 carried
+25 (+192.3%)
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+2+8.3%609+45+8.0%
Jun 17, 202624+4+20.0%564+90+19.0%
Jun 16, 202620+5+33.3%474+113+31.3%
Jun 15, 20261500.0%36100.0%
Jun 14, 20261500.0%36100.0%
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Jun 3, 20261500.0%36100.0%
Jun 2, 20261500.0%36100.0%
Jun 1, 20261500.0%36100.0%
May 31, 202615+1+7.1%361+23+6.8%
May 30, 20261400.0%33800.0%
May 29, 20261400.0%33800.0%
May 28, 20261400.0%33800.0%
May 27, 202614+1+7.7%338+23+7.3%
May 26, 202613——315——
Tracked since May 6, 2026·Details 17h ago·Followers 10h ago