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Chernobyl: Chapter One

- Fixed stringtable for first map

- Adjusted difficulty level for all maps (now less spawns)
- Higher item spawn rate
- Random lockers now almost always spawn something
- Fixed some minor nav-mesh errors
- Improved performance slightly

- Adjusted diffiulty level for finale (now easier)
- No more mobs on start of first map

- lower spawn rates for special infected and mobs due to popular requests

-> Disable all other addons, especially those that alter models and textures
-> Update your graphics drivers
-> Fullscreen (not windowed)
-> Disable any secondary monitors

-> Change your shader settings to „medium“ or higher

-> Make sure you are subscribed to Chernobyl Content Part 1 - 7

-> Make sure your addon list is updated completely before starting the campaign


The infection continues to spread all over the Eurasian mainland, leaving its governments in disarray. With no other option in mind, the remaining survivors are heading east to reach the Siberian tundra. As rumor has it, the infection cannot spread effectively in the cold winds of the permafrost region.


The four survivors managed to bribe one of the last pilots who is bound to leave Warsaw to fly them eastwards. The safest route seemed to be right over the Chernobyl Nuclear Power Plant as they thought there were no people left. Little did they know that prior to the outbreak there were still around 4000 people left to maintain reactor block #1 - #3 and seal off the destroyed reactor block #4.


• 5 new maps in Coop (Versus included in the next update)
• Close representation of the actual Jupiter Factory/Pripyat
• Over 400 new models and 500 new textures
• New “rescue vehicle”
• Custom panic events


What you need to play:
• Chernobyl: Chapter One
• All 7 of the content addons
Chernobyl Campaign Collection


Please turn on the game instructor in your options for information relevant to progressing through the campaign.


Please turn on music for this campaign. Our composers have spent a lot of time and energy to create our very own soundtrack.


If you prefer Russian weapons, you can check out this collection of weapon/survivor mods. Of course, you can play with whatever mods you like.
Chernobyl Supported Weapons


The Versus Mode will be included in the next update. We are currently looking for experienced versus players to optimize the gameplay. If you are interested, contact us at: av3ris[at]Chernobyl-l4d2.de


We are happy to improve upon the experience you have. Please participate by giving us feedback on the workshop discussion section or in our Steam Group:
Chernobyl Steam Group

At the moment we host 7 servers all over the world that you can use to play on. Feel free to host your own local server or even a public server. You can access them easily by joining our Chernobyl Steam Group

Chernobyl Frankfurt 1 (GER)
37.10.107.155:27015

Chernobyl Frankfurt 2 (GER)
31.214.219.233:27015

Chernobyl Frankfurt 3 (GER)
85.190.142.153:27015

Chernobyl Frankfurt 4 (GER)
37.10.102.114:27015

Chernobyl New York (USA)
134.255.251.48:30200

Chernobyl Singapur 1
128.0.112.114:13800

Chernobyl Singapore 2
128.0.112.110:10400