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Atomfall Story Expansion Pack: The Red Strain

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DLC
Downloadable Content. This content requires Atomfall on the same platform in order to play
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This title is redeemed via Steam. Your key will require activation on Steam. Find out more

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About Atomfall Story Expansion Pack: The Red Strain

About this DLC

Continue the adventure of Atomfall with "The Red Strain” Story Expansion Pack, introducing a new location, enemies, quests, characters, items, weapons, and more.

Nestled in the hills, away from the prying eyes of the locals, lies Test Site Moriah. A secret research station built on the site of an old missile testing facility, it has been shrouded in mystery ever since it opened. But something changed when the quarantine came into effect and the facility has fallen into more nefarious hands who are keen to keep its secrets for themselves. Now a route back into the facility has been located, and with it the opportunity to finally get some answers.

Investigate Test Site Moriah

Before the Windscale Disaster, the research site was home to top-secret government projects, so classified that even those at the top of B.A.R.D were unaware of their existence. Now the facility lies forgotten, deliberately sealed away from the rest of the Quarantine Zone. What secrets rest behind the locked doors? Only you can find out.

A new story in its own right, The Red Strain offers original leads that interlink with Atomfall’s core narrative, expanding the story and unlocking new endings to your adventure.

Enhance your Arsenal

Enhance your experience with a variety of new skills and equipment. Strike from the shadows with new suppressed firearms or unlock the ability to equip the heavy weaponry from disabled robots and unleash devastating attacks on your enemies.

Fight for Survival

A terrifying new threat, never encountered before enemies and challenging obstacles await you, offering an immense challenge. You will need to have your wits about you if you are to have any chance of making it out alive.

DLC Details

Platform:
steam
Release Date:
September 16, 2025
Developer:
Rebellion
Publisher:
Rebellion
Supported Languages:
English
Steam Controller Support:
Xbox
Link:
Features:
Singleplayer
Downloadable content

Steam achievements

Steam cloud

Family sharing

Product Requirements

Minimum:

  • Requires a 64-bit processor and operating system
  • OS: Windows 10 or later
  • Processor: Intel CPU Core i5-9400f or equivalent
  • Graphics: Nvidia 2060, Intel Arc A750, AMD Radeon RX 6600 or equivalent (6GB minimum)

Recommended:

  • Requires a 64-bit processor and operating system

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Frequently Asked Questions

Yes, you will need Atomfall on the same platform to play Atomfall Story Expansion Pack: The Red Strain.
Available DLCs for Atomfall include Story Expansion Pack Wicked Isle and Basic Supply Bundle
Minimum:
  • Requires a 64-bit processor and operating system
  • OS: Windows 10 or later
  • Processor: Intel CPU Core i5-9400f or equivalent
  • Graphics: Nvidia 2060, Intel Arc A750, AMD Radeon RX 6600 or equivalent (6GB minimum)
Recommended:
  • Requires a 64-bit processor and operating system
Atomfall Story Expansion Pack: The Red Strain was released on September 16, 2025
Atomfall Story Expansion Pack: The Red Strain is published by Rebellion
Atomfall Story Expansion Pack: The Red Strain was developed by Rebellion
Copyright ©2025 Rebellion. All rights Reserved. The Rebellion name and logo, the Atomfall name and logo are trademarks of Rebellion and may be registered trademarks in certain countries.

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