Atomfall

Lore & Background

Atomfall is set in an alternate history where the 1957 Windscale fire covered much of the Lake District and Cumberland in radioactive fallout. The disaster was triggered by an energy surge from a secret research site called Oberon, which housed a meteorite discovered after World War II. The British government established the British Atomic Research Division (BARD) and built the Windscale plant to mask the discovery and power underground facilities. The quarantine zone trapped remnants of the military, who reorganized as Protocol under Captain Grant Sims, enforcing martial law in Wyndham village and running Skethermoor Prison. A group of infected individuals called Druids, led by Mother Jago, sought to embrace Oberon's influence. Other key figures include Joyce Tanner, Dr. Alan Holder, and Dr. Garrow, each influencing the game's multiple endings.

Reader's Guide

Atomfall is notable as Rebellion Developments' most successful launch, reaching 1.5 million players by 1 April 2025. The game was inspired by Fallout: New Vegas, Metro, and BioShock, but prioritized investigative gameplay to promote player freedom. It features interconnected zones rather than a single open world, reflecting the team's expertise from the Sniper Elite series. The game won Best British Game at the 22nd British Academy Games Awards and was nominated for Innovation in Accessibility at The Game Awards 2025. Two story expansions, Wicked Isle (3 June 2025) and The Red Strain (16 September 2025), were released post-launch. A television adaptation is in development as a co-production between Two Brothers Pictures and Rebellion, with Harry and Jack Williams writing. A novel, Atomfall: The Omega Order by James Lovegrove, was published in 2026.

Did You Know?

• The game's setting is inspired by the real 1957 Windscale fire, but reimagined as a nuclear and alien contamination event.
• Players can complete the game without killing any enemy, or alternatively kill every character.
• The protagonist's heart rate increases with combat and sprinting, causing darkened vision and muffled hearing.
• A comic strip based on the game appeared in Judge Dredd Megazine from April to July 2025.

The Alternate 1960s of the Quarantine

In Atomfall, the familiar landscape of England's Lake District and Cumberland is reimagined through a dark alternate-history lens. In this timeline, a slate mining operation shortly after World War II uncovered a meteorite called Oberon, prompting the British government to establish the British Atomic Research Division and construct the Windscale nuclear plant directly above the site. The facility served a dual purpose: concealing the true alien nature of the discovery while powering a vast network of underground bunkers and research installations. The Interchange, a massive interconnected bunker complex, functioned as BARD's operational hub and the sole gateway into the Oberon site beneath. Research into the Oberite mineral and its alien contents yielded breakthroughs like the atomic battery and a training stimulant. Then, on 10 October 1957, a catastrophic incident rooted in both internal negligence and foreign sabotage sent an energy surge through the Oberon site, obliterated the Windscale plant, and scattered radioactive and alien contaminants across the region. An interference field subsequently severed all electrical and signal connections, and the government sealed off Wyndham village before expanding the quarantine to the wider area, trapping its inhabitants in a lawless, contaminated wilderness for years.

Survival Mechanics and the Heart-Rate System

Atomfall casts the player as a first-person protagonist navigating a world where resources are perpetually scarce. Rather than tracking a full suite of survival stats, the game distills tension down to two core meters: health and heart rate. Every act of aggression—firing a weapon, sprinting across open ground, or delivering a kick to an enemy—drives the heart rate upward, progressively darkening the player's vision and muffling their hearing until composure is restored. This design choice makes stealth a genuinely viable strategy; the game can be completed without a single kill, yet the opposite extreme of eliminating every character is equally permitted. The English countryside of the Lake District is rendered as a series of smaller, interconnected zones that players traverse freely, gathering scraps and materials to craft weapons or scrounging for the ever-scarce ammunition. Non-playable characters populate these areas, offering dialogue choices that shape the narrative, while leads discovered along the way unlock new objectives that can be pursued in any order once available. The result is a survival loop that rewards both cautious exploration and bold confrontation.

A Story Built on Branching Allegiances

The narrative of Atomfall begins with the player waking in bunker L8 at Slatten Dale, Cumberland, stripped of memory and handed a keycard by a wounded scientist who warns the quarantine has persisted for five years. A cryptic voice from a red telephone box declares that Oberon must die, setting the tone for a story defined by competing factions. The player must gather atomic batteries—through scavenging, defeating robots, or trade—and retrieve a signal redirector from Skethermoore Prison to power the Interchange and reach the Oberon dig site beneath the Windscale plant. Along the way, key figures pull the player in different directions: Captain Grant Sims and his martial-law regime, Protocol; Mother Jago and her Druids, who seek to embrace Oberon's influence; Joyce Tanner, an outsider on a convoy; Dr. Alan Holder, the last surviving Interchange scientist desperate to kill Oberon; and Dr. Garrow, BARD's head scientist who escaped the quarantine only to return and get imprisoned. Following one key character inevitably means defying the others, and the final act—destroying Oberon with explosives or poison, or enriching it with a growth stimulant—determines whether the player escapes, is kidnapped, or merges with the Voice in the Soil.

Design Roots and Development Philosophy

Rebellion Developments, the British studio behind the Sniper Elite series, crafted Atomfall with a clear set of design inspirations. Associate head of design Ben Fisher cited Fallout: New Vegas as a primary influence, praising it as a "dense" experience that deeply valued player choice. Rather than constructing a single sprawling open world, the team leaned on their expertise in designing tightly scoped maps to build several smaller, interconnected zones across the Lake District. Metro and BioShock also shaped the game's atmosphere and structure. Crucially, Rebellion prioritised investigative gameplay above all else, encouraging players to piece together the region's history through exploration and dialogue rather than following a rigid quest chain. The game launched on 27 March 2025 across PlayStation 4, PlayStation 5, Windows, Xbox One, and Xbox Series X/S, and was both developed and published in-house by Rebellion. Critics offered mixed assessments of the finished product, but the design philosophy—blending survival tension, faction-driven storytelling, and a commitment to meaningful player agency—marks a distinct departure from the studio's previous tactical-shooter formula.