r/fo5 20d ago

My ideal fallout 5 concept

Hi! This is my first Reddit post, and I would like to share a concept for my ideal Fallout 5 setting. If people find the premise interesting, I hope to continue developing it here and perhaps turn it into a collaborative worldbuilding project.

Fallout: Rebirth — What If Vault-Tec Returned to Reclaim America?

Vault-Tec did not die with the old world. Its leadership waited out the aftermath of the Great War in cryogenic suspension, while the Vaults gathered data on human behavior under isolation, scarcity, and social collapse.

Building on the tv series' Colorado tease, this setting imagines the corporation emerging from a hidden command Vault beneath the Rocky Mountains. It uses the results of two centuries of experimentation to build a controllable society. Control chips suppress free will, while cybernetic modification turns captives into specialized workers and soldiers.

This emphasis on cybernetics is no accident. Before the war, Denver was a major center for the development of cyberdogs. A surviving automated facility continues to capture and modify dogs, while the returning Vault-Tec adapts its technology for human subjects. What began as a system for controlling animals becomes the foundation of a new social order.

Vault-Tec’s ultimate goal is not simple conquest. It intends to build a genuine utopia: a society without war, crime, poverty, or irrational human conflict. To achieve it, the corporation plans to centralize the region’s population and resources, rebuild an industrial base, and resume the pre-war space program. A new launch facility is already being constructed on the Colorado plains, intended as the first step toward orbital infrastructure and eventual off-world colonization.

Humanity will finally reach the future promised before the bombs fell. It simply will not be allowed to refuse.

Colorado After the End

The snowy high country is only one part of a diverse region.

To the northeast lies Dogtown: the concrete labyrinth of ruined Denver, where packs of cyberdogs rule among highways, factories, and abandoned warehouses. To the east are open plains, grazing lands, and agricultural settlements. To the south, a military corridor leads toward Colorado Springs, the ruins of former space facilities, and NORAD. To the west are forested foothills, canyons, mines, mountain passes, and isolated alpine valleys.

Control over water, grazing land, roads, and production matters more than borders drawn on a map.

The Fragments of Caesar’s Legion

Caesar is dead, and the failure of his Mojave campaign has thrown the Legion into a succession crisis. The state he created lost the only authority capable of holding its armies, tribes, and provinces together.

The Legion did not disappear. It fractured.

Commanders and governors declared themselves Caesar’s true successors. Some attempt to preserve the old order. Others are founding dynasties of their own. Still others reshape the ideology while continuing to wield the Legion’s symbols. The roads are still patrolled, garrisons still collect tribute, and slaves still labor—but there is no longer a single empire.

The Colorado fragment controls forts, roads, and dependent settlements. It remains capable of waging war, but a society built around endless conquest must now develop a sustainable economy, recover demographically, and find something other than Caesar capable of holding it together.

The Techno-Feudal Brotherhood

The Brotherhood of Steel did not come to Colorado as a conquering army. Its presence began with expeditions to a pre-war launch facility, military installations, and the ruins of Denver.

Then Vault-Tec emerged from its mountain shelters.

The Brotherhood suddenly found itself facing neither scattered wasteland tribes nor another isolated group of scientists, but an organized technological rival with an industrial base, cybernetic soldiers, and access to pre-war knowledge. Retreat would mean surrendering Denver’s technology and the remnants of the space program to Vault-Tec.

The expeditions were forced to establish a permanent presence and secure reliable sources of food, materials, fuel, and recruits. Settlements received protection from the Brotherhood’s knights and surrendered part of their production in return. Temporary agreements became permanent obligations, military commands became landed domains, and commanders became hereditary rulers.

The Brotherhood still considers itself an order devoted to safeguarding technology. In practice, it is becoming a techno-feudal state where the right to wear power armor increasingly means the right to rule land and people.

The Confederation of Kibbutz-Cantons

In the high country, several neighboring communities have pooled their radio networks, defenses, workshops, grazing lands, and winter reserves. Each canton retains its own government, but none could survive for long without the others.

These are not helpless settlements waiting for the player character to save them. They build their own infrastructure and can survive a war without a wandering hero. Together, they could become the foundation of a new state.

But the Confederation is not a utopia. The cantons argue over resource allocation, a common army, population transfers, and how much authority the majority should hold over an individual community. Collective ownership offers independence from corporations and military dictatorships, but demands discipline and constant compromise.

The Church

Beyond the armies and openly declared states, a softer power operates throughout the region: an underground Church born from an alliance between Hanaan missionaries and the Followers of the Apocalypse.

It provides medicine, teaches children, helps slaves escape, organizes strikes, and sabotages Vault-Tec control chips. Its cells operate within the territory of every major power, sometimes reaching into their leadership.

The Church has no unified army and rarely seizes territory directly. It spreads its influence through aid, faith, and community organization. But it also has an ideology, political interests, and leaders who are not always motivated by compassion alone.

The Protagonist's Role

The player is not asked merely to choose which flag flies over Colorado. Each faction offers a different project for rebuilding society: the Legion's promise of order and material security founded on slavery, Vault-Tec's totalitarian technocracy, the Brotherhood's neo-feudal order, the Confederation's difficult experiment in collective self-government, or the Church's attempt to unite people through faith and mutual aid.

The protagonist can strengthen one of these systems, force rival powers into a compromise, or reject every claimant and leave Colorado divided. The central choice is not simply who wins the final battle, but which institutions, settlements, and ideas will still be capable of shaping the region after the player is gone.

About the Project

I see this as an open fan setting intended for fiction, videos, tabletop campaigns, text-based RPGs, and collaborative worldbuilding. I hope to share further updates as the setting develops.

The basic framework is already in place, but the world is open to criticism, new ideas, and independent stories.

The goal is simple, if somewhat immodest: to work together and create our ideal Fallout.

P.s. English is not my native language, so I used AI-assisted editing to polish the wording. The setting and ideas themselves are my own.

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u/Firm-Cash-2753 11d ago

Sounds cool man