Protocol 86: Chernobyl CD Key
PC price comparison · Core Interactive · Sep 24, 2026
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.
Lowest final price
at Steam · Standard Official
Historical low: $4.89 on September 24, 2026
Get the best deal ↗Compare Protocol 86: Chernobyl key prices
Sorted by final price including fees, never by commission.
| Store | Edition | Activates on | Region | Price | Fees | Final price | |
|---|---|---|---|---|---|---|---|
SteamOfficial | Standard | Steam | Global | −30%$4.89 | none | $4.89 | Go to store ↗ |
- SteamOfficial
Standard · Steam · Global
$4.89 · fees: noneGo to store ↗$4.89
Protocol 86: Chernobyl price history
The chart appears after a few days.
Historical lows by store
- Steam$4.89
Protocol 86: Chernobyl player count
- Playing now
- 2
- 24-hour peak
- 3
- 30-day peak
- 3
Concurrent players on Steam, hourly peak over the last 7 days. Source: Steam Web API.
About Protocol 86: Chernobyl
========================================= FILE: EMERGENCY_READ_ME_00.txt DATE: 04.11.1991 | TIME: 23:58 USER: PETROV_P (ID: 4421-B) STATUS: RESTRICTED_LOCAL_LINK========================================= Unidentified units have infiltrated the facility. Explosions are erupting, and red alarm logs are flooding the system one after another. I can hear the boots in the corridor. Screams echo through the facility’s concrete walls. They came for us. I think they’re going to bury us beneath this concrete — along with every unknown and every secret we carry. There is something repeatedly mentioned in the logs: TROYKA. A secret Soviet underground research and experimentation facility established after the Chernobyl disaster. It was believed to have completely collapsed after the great destruction and explosions. But this place is still standing. These concrete walls are still breathing — resting above thousands of graves beneath them. Is this operation in the autumn of 1991 an attempt to bury the collapsing Soviets’ hidden crimes deep within history? Or has the Cold War turned hot? Or is this the beginning of a new world war? We don’t know what is happening out there. To survive, you must use the terminals to find the exit. The .txt, .png, .wav, and .secret files within them are your only guides to the surface. Strange things are happening here. Things I cannot explain — things you must witness with your own eyes. Do you hear the crackle of radiation behind the walls? The whispers? The approaching footsteps? Be careful. Hundreds of meters underground, between these cold walls, you are not alone. And you are certainly not safe. Gather the clues. Solve the puzzle. Find the way out. Survive. The hidden truths within these logs must rise to the surface with you. These dark secrets must not be buried in history. If you are reading this, know that no one before you has succeeded. Will you? Hahahaha. The others said the same thing. ========================================= // WARNING: RADIATION LEAK DETECTED (LEVEL 4) // CRITICAL: AIR PURIFICATION SYSTEM FAILED // SIGNATURE: P. PETROV - Maintenance Engineer========================================= uid-0x17@unit-2:~$ protocol86 is booting... [OK] Alternate History: A bleak atmosphere filled with tension and horror. Under relentless psychological pressure, can you solve the puzzles and preserve your sanity? Or will you end up like the others? Procedural Sectors: Hundreds of claustrophobic…Read more
Protocol 86: Chernobyl system requirements
Minimum
- Requires a 64-bit processor and operating system
- OS: Windows 10 (64-bit)
- Processor: AMD Ryzen 5 1600 or Intel Core i5-8400
- Memory: 4 GB RAM
- Graphics: NVIDIA GeForce GTX 1050 2 GB or AMD Radeon RX 560 2GB
- DirectX: Version 12
- Storage: 1 GB available space
Recommended
- Requires a 64-bit processor and operating system
- OS: Windows 11 (64-bit)
- Processor: AMD Ryzen 5 5600 or Intel Core i5-11400
- Memory: 16 GB RAM
- Graphics: NVIDIA GeForce RTX 3050 or AMD Radeon RX 5600 XT
- DirectX: Version 12
- Storage: 1 GB available space
Protocol 86: Chernobyl key FAQ
+What is a Protocol 86: Chernobyl CD key?
A Protocol 86: Chernobyl CD key is a digital code that unlocks the game on a PC platform such as Steam. After redeeming it, you download the game directly from that platform and it stays in your library.
+What is the cheapest price for Protocol 86: Chernobyl?
The cheapest Protocol 86: Chernobyl key right now costs $4.89 at Steam, 30% off the regular price. We compare 1 offers from 1 store, and the price already includes payment and service fees.
+What is the historical low for Protocol 86: Chernobyl?
The lowest price we have recorded for Protocol 86: Chernobyl is $4.89 on September 24, 2026. Check the price history chart to decide whether to buy now or wait for the next sale.
+How many people play Protocol 86: Chernobyl?
Right now 2 people are playing Protocol 86: Chernobyl on Steam, with a peak of 3 in the last 24 hours. Player counts are updated every 15 minutes.
+Is it safe to buy a Protocol 86: Chernobyl key?
Buying from an official store such as Steam, GOG or Epic Games is always safe. Key resellers are often cheaper but sell keys second-hand, so check the region lock and buyer protection before you buy. Every offer on GameKeyDeal is labelled as official or reseller.
