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Stellaris Dev Diary #378 - Genetic Ascension, Traditions, and Advanced Governments

Hello Stellaris community!
I’m PDS_Bojj, a content designer on Stellaris, and as someone with a deep love for storytelling, weird science, and moral quandaries wrapped in biotech horror, working on BioGenesis has been an absolute joy. This expansion dives deep (like deep deep) into what it means to reshape life, not just physically, but culturally, philosophically, and even politically.

In today’s diary, I’m thrilled to share a look at something we’ve been brewing in the gene-vats for a while now: Biomorphosis, our brand-new Genetic Ascension path, and all the squishy systems that come with it: situations, modular traditions, and yes, even genetically-themed Advanced Authorities! It’s evolution, but make it playable.

So whether you're here for the cloned bureaucrats, the flawless über-citizens, or the writhing mutation-hives of your dreams… Auntie Bojj has got you covered!

Let’s dive in!

The Biomorphosis Situation​

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Biomorphosis: Why not jump-start the future of our species?
In BioGenesis, we’ve reimagined the Genetic Ascension path into something more dynamic, thematic, and, dare I say… organic. Welcome to Biomorphosis, a Situation that unfolds over three stages, each one a critical turning point in your species’ transformation.​

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Your Situation Approach is a lot like yourself… It matters.
When you take the newly named Biomorphosis Ascension Perk, you will start on the path to shape the future of your civilization through a series of decisions that define how your species evolves. At the beginning of each stage, you’ll select one of three philosophical and technological approaches to guide your development:

Purity​

The body is a sacred vessel, and perfection lies in refinement, not deviation. This approach focuses on enhancing existing traits, optimizing your species’ current genetic code, and preserving essential identity. Expect events about ideological purity, resistance to corruption (internal and external), and perhaps a little eugenics drama if you’re feeling spicy.

Cloning​

Mass production meets organic precision. Cloning enables you to scale your population quickly and efficiently, but at what cost to individuality? This path explores questions of identity, resource management, and ethical dilemmas surrounding consciousness and copyhood. You might find your leaders arguing about the souls of your citizens... or the cost-benefit analysis of their replaceability.

Mutation​

Why perfect the old when you can become something new? Mutation embraces chaos, randomness, and radical adaptation. This is the path for those who believe in progress through transformation, no matter how monstrous. As your species warps and shifts, so too will your empire! Expect powerful new traits, disturbing events, and maybe even a few limbs where there weren’t any before.​

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You can’t facilitate genome research without a Genomic Research Facility!
Each stage of Biomorphosis brings with it new narrative events and mechanical consequences, all tailored to your chosen approach. You can double down on a single path, or mix and match to create something truly unique; a mosaic of flesh, thought, and purpose. But don’t forget to build a Genomic Research Facility on one of your planets first, otherwise you won’t have the facilities to engage in genomic research!
So, whether you’re breeding perfect paragons, churning out clone armies, or embracing the squelching beauty of the unknowable genome, Biomorphosis offers you a chance to live your best post-Darwinian fantasy.

Modular Tradition Trees​

BioGenesis doesn’t just reshape your species, it reshapes how your empire thinks, acts, and dreams. Introducing the Modular Tradition Tree: a dynamic, partially customizable tradition system tailored to your Biomorphosis journey.​

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Pictured: Flexible Traditions! They bend, but don't break.

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Wanna optimize your genetic traits? All the cool kids are doing it.

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M-U-T-A-T-I-O-N, YOU CAN CONTROL YOUR MUTATION!
As your empire progresses through the Biomorphosis Situation, the approach choices you make (Purity, Cloning, or Mutation) don’t just influence events, they also determine which Traditions you’ll gain access to in a new unique Genetic Ascension tree.

Each playthrough will feel different, because each tradition tree is built around a foundational path (again: either Purity, Cloning, or Mutation), augmented by select traditions from the other two, depending on your hybridization of choices across the three Biomorphosis stages.

At the end of the Biomorphosis situation, your empire unlocks a special ascension tradition tree. This tree is centered around your dominant approach (whichever of the three you selected the most during the situation). Additional picks in the tree will be drawn from the other approaches you dipped into, creating a hybrid structure.

So, if you’ve picked Mutation twice and Cloning once, you’ll get a Mutation-based tree with some synthetic reproductive flavor. Or, if for example, you go all in on Purity, you can expect a tradition tree as tight and controlled as your gene pool.

Each tradition within the tree reinforces the strengths and philosophies of its source:

Purity Traditions enhance species cohesion, trait optimization, and biological defense mechanisms.

Cloning Traditions focus on growth efficiency, leader replacement, and societal adaptation to mass-production living.

Mutation Traditions unlock exotic biology, unpredictable perks, and a flirtation with the unrecognizable.​

Question: Why did you do this?​

Answer: We wanted to create a system that reflects you. Not just your empire’s species, but the ideological journey you’ve taken. This modular design means you aren’t locked into one narrow vision of Genetic Ascension. It means you can experiment, mix paths, or triple-down on your biological ideals. Whether you’re crafting a society of elegant gene-purists or an unholy sprawl of ever-shifting abominations, the tradition tree will evolve with you.

Advanced Authorities​

Once you’ve completed your unique Genetic Ascension tradition tree, your empire will be ready for its next evolutionary leap, not just biologically, but politically. BioGenesis introduces a new system of Advanced Authorities, tailored to the philosophy that shaped your Biomorphosis journey.​

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Everyone is equal! Even if you have tentacles coming out of your head! But also… ew.
Whether you rule through mandate, decree, profit, consensus, or collective consciousness, your ascended society will transform into a more specialized and thematically rich version of its base authority, infused with either Purity, Cloning, or Mutation ideology.

These are not just cosmetic upgrades. Each Advanced Authority comes with unique modifiers, and governing mechanics, reflecting the bio-political ideals your empire has chosen to embody.

Here are some examples of the new Advanced Authorities:​

  • Cloning Democracy, or “Cordant Multiplicity”
    This government embraces cloning technology as a testament to equality and progress. Clones stand shoulder to shoulder with natural-born individuals, their voices equally valued. The will of the people is enriched by the diversity of every perspective, clone or not.​
  • Mutation Hive Mind, or “Adaptive Dominion”
    This Hive's hyper-adaptive drones form a dynamic and ever-evolving force, leveraging constant mutation to overcome environmental and tactical challenges. Each adaptation strengthens the collective, ensuring unparalleled versatility and resilience as the Hive mind thrives in any condition.​
  • Purity Dictatorship, or “Nucleic Judiciary”
    This government wields genetic and biometric data as tools of pre-emptive justice, scrutinizing every citizen's genetic code for criminal predispositions. By intervening before transgression, it ensures order through meticulous oversight. True justice is not reactive but preventive, safeguarding society by eliminating crime at the root.​
  • Cloning Hive, or “Replicating Horde” (EDIT: I mistakenly wrote Cloning Megacorp here, but it should be Cloning Hive. OOPS. - Bojj)
    Advanced cloning technology drives the relentless production of genetically identical drones, each engineered for perfect efficiency and unity. Obeying the innate command to go forth and multiply, this hive intends to blot out the stars.​
  • Mutation Empire, or “Genomic Expansionist”
    Embracing the unpredictable power of random mutation, this empire taps into untold potential, fostering innovations and abilities that traditional methods could never achieve. In the race for dominance, the chaos of mutation becomes their greatest advantage, propelling them toward unrivaled supremacy.​
  • Purity Oligarchy, or “Eugenic Hierarchy”
    Absolute power must be entrusted to the genetically ordained elite, the purest and most capable stewards of this civilization's destiny. Beneath them, each citizen fulfills a predefined role, meticulously tailored to their inherited genetic potential. Contentment flows not from ambition, but from accepting one's designated purpose.​

Tailored to Your Path​

Each of the three Biomorphosis philosophies (Purity, Cloning, and Mutation) has its own flavor of Authority type. That’s 18 total Advanced Authorities, all designed to express a vision of what society has become in the aftermath of biological transcendence.

Choosing your Advanced Authority is a crowning moment. It’s a reflection of your empire’s journey from mere organic matter to a society reborn in gene-forged glory.

That’s all from me for now. Thanks so much for reading! May your biomass be bountiful, your cloning vats efficient, and your mutations... mostly non-lethal.

Stay curious, stay squishy,
PDS_Bojj

...​

A Clone Interlude​

Hey, Alfray Stryke jumping in here as I’ve seen a lot of questions of “How does the Clone Army origin interact with BioGenesis??1!”

To start with, as a Clone Army origin you will be prevented from undertaking Biomorphosis until you’ve unlocked your genetic potential however, once you’ve done so you could even take the ascension perk as your first AP.​

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How do you unlock your genetic potential, you ask? By completing either the Clone Fertility or Clone Potential special projects.

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Clone Fertility makes your species capable of reproduction once more and allows you to undergo Biomorphosis with the complete freedom of any path you desire.

Clone Potential however means that your species remains as infertile clones and as such locks you to an upgraded version of the Cloning path if you undertake Biomorphosis. This upgraded Cloning path grants the following, in addition to the regular rewards:​
  • The ability to genetically modify Clone Soldier species.​
  • Regular Clone Vats, Genomic Research Facilities and Medical Buildings increase the number of Clone Soldiers sustained per planet.​
  • Being able to apply the Clone Soldier trait to other species via Genetic Modification.​

Next Week​

Next week we’ll be exploring Phenotype Traits and the Evolutionary Predators Origin.

See you then!​
 
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How does "Under One Rule" interact with the new ascension?

After ascension, the Luminary receives an additional Destiny trait. For synthetics, this trait is extremely powerful, while for cyborgs and psionics, it's weak.

Biological ascension used to be bad, but the new DLC is supposed to completely rework it and make it strong. My question is: can biological ascension actually take advantage of the extra species traits and species points? If the new ascension path gives more trait picks but doesn't introduce many strong new species traits, then the +2 trait picks from the Luminary won’t be all that useful, especially compared to the powerful bonus that synthetic Luminaries get.
 
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I really like these flexible Ascension System. It's maybe something we can expect from the Psionic rework with the new Shroud mechanics too?
In addition i'm really happy that the advanced governments are expanded for biology too!

A question: Has the bio ascension some interaction with bioships? Especially advantages or options other empires do not have.

I'm hoping we get flexible ascension for Synthetics and Cybernetics, too.
 
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One thing I have noticed is that the majority of specialized governments tend towards the dystopian, it looks like Biogenesis will continue/accelerate that trends? Is it intended that Ascension is inherently supposed to be a social ill from the narrative perspective?
I mean it is the state mandate that fundamentally changes your entire species / empire by force. They may use propaganda to align the people but generally speaking it feels very autoritative and it's never really something you naturally slip into organically but which is always the result of the state setting a goal, distributing resources and then making it final.
 
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This was the thing I was expecting the most, and indeed it seems cool as hell!

Could you compare, if feasible, the three variations we get with the ones machines have?

What I am trying to get is an idea of how the three will work out in general (I know they probably wont look like the machines ones at all, just the general idea). As an example, is mutation perhaps similar to Modularity in the regards that they both focus extremely in modding pops with strong traits? Perhaps cloning is similar to Nanites in the sense that they are meant to be played wide with numbers rather than quality on their side?

I ask this comparison because the machine's paths are the closest we have to what's coming so I can't think of a better way to compare it to existing data. If they are not realistically comparable, why not be a good citizen of The Imperium and share some tiny details on what would be the key' game play mechanics of each path? :)

I guess i just want to know more about each path xD. When we got the DDs for machine age a few traits where shown here and there along with some explanation. Any goo dev willing to leak us some content? xD
 
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Purity Dictatorship, or “Nucleic Judiciary”
This government wields genetic and biometric data as tools of pre-emptive justice, scrutinizing every citizen's genetic code for criminal predispositions. By intervening before transgression, it ensures order through meticulous oversight. True justice is not reactive but preventive, safeguarding society by eliminating crime at the root.
Purity Oligarchy, or “Eugenic Hierarchy”
Absolute power must be entrusted to the genetically ordained elite, the purest and most capable stewards of this civilization's destiny. Beneath them, each citizen fulfills a predefined role, meticulously tailored to their inherited genetic potential. Contentment flows not from ambition, but from accepting one's designated purpose.
These definitely sound really dystopian, kind of expected from a "purity" theme.

I wonder what a Purity Democracy looks like, if it's on a more benevolent side or just as messed up as those.
 
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I mean it is the state mandate that fundamentally changes your entire species / empire by force. They may use propaganda to align the people but generally speaking it feels very autoritative and it's never really something you naturally slip into organically but which is always the result of the state setting a goal, distributing resources and then making it final.
The advanced democratic authorities for Cybernetic and Synthetic leaned more towards giving you a choice of of either "we use the new technology to enhance the democratic process" or "we use the new technology to take democracy to its logical extreme and create a society that would make Marx proud". I suspect we'll have the same dichotomy here.
 
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Mutation​

Why perfect the old when you can become something new? Mutation embraces chaos, randomness, and radical adaptation. This is the path for those who believe in progress through transformation, no matter how monstrous. As your species warps and shifts, so too will your empire! Expect powerful new traits, disturbing events, and maybe even a few limbs where there weren’t any before.


Can I go full TETSUUUOOOOOOOO here?

PuORCCY.gif


Modular Tradition Trees​

BioGenesis doesn’t just reshape your species, it reshapes how your empire thinks, acts, and dreams. Introducing the Modular Tradition Tree: a dynamic, partially customizable tradition system tailored to your Biomorphosis journey.​

View attachment 1275831
Pictured: Flexible Traditions! They bend, but don't break.

View attachment 1275833
Wanna optimize your genetic traits? All the cool kids are doing it.

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M-U-T-A-T-I-O-N, YOU CAN CONTROL YOUR MUTATION!

THIS IS HUGE!

Purity Traditions enhance species cohesion, trait optimization, and biological defense mechanisms.

Cloning Traditions focus on growth efficiency, leader replacement, and societal adaptation to mass-production living.

Mutation Traditions unlock exotic biology, unpredictable perks, and a flirtation with the unrecognizable.​

One question - are Purity and Mutation approaches mutually exclusive or not? As in nothing you have wrote points to that, but I still would like a confirmation.
You know, roleplay as a "perfectly get to know our genes first only to later mutate and purify/upgrade/stabilize them approach".

Question: Why did you do this?​

Answer: We wanted to create a system that reflects you. Not just your empire’s species, but the ideological journey you’ve taken. This modular design means you aren’t locked into one narrow vision of Genetic Ascension. It means you can experiment, mix paths, or triple-down on your biological ideals. Whether you’re crafting a society of elegant gene-purists or an unholy sprawl of ever-shifting abominations, the tradition tree will evolve with you.

If you go by all three approaches does it take the first approach as the main one or is it random?
 
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One question - are Purity and Mutation approaches mutually exclusive or not? As in nothing you have wrote points to that, but I still would like a confirmation.

They are not mutually exclusive.

If you go by all three approaches does it take the first approach as the main one or is it random?

You get to choose.
 
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  • Cloning Megacorp, or “Replicating Horde”
    Advanced cloning technology drives the relentless production of genetically identical drones, each engineered for perfect efficiency and unity. Obeying the innate command to go forth and multiply, this hive intends to blot out the stars.

Could you please acknowledge whether this is a typo or not?
 
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I for one am hoping mutation democracy fits my dreams of geno-anarchic mayhem.
 
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Actually, come to that, is there any interaction with the Overtuned origin? That seems like it would at least merit custom flavor text, given how readily (and recklessly) this society's been messing about with genetics already.
 
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I for one am hoping mutation democracy fits my dreams of geno-anarchic mayhem.

You might like The Seep. It’s a novella where psychic alien goop arrives on earth and gets into the water system. Humans connect to each other and nature, creating a global anarchist society where biology can be mutated at will.

Speaking of sci-fi:

IMG_0166.jpeg


Looks like an Oankali from Octavia Butler’s Xenogenesis trilogy.
 
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