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Stellaris Dev Diary #376 - Announcing BioGenesis and Stellaris: Season 09

Metal rusts. Flesh adapts.​


It’s my great pleasure to announce the start of Stellaris: Season 09, with the BioGenesis expansion leading the way alongside the Stellaris 4.0 ‘Phoenix’ update.


The future of evolution is here. BioGenesis continues our remastering of the Ascension Paths by granting you unprecedented power over life itself and hatches May 5th, 2025.


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Evolution had its chance. Now it’s our turn.​

Two Biological Shipsets

Command living fleets that evolve alongside your empire. Customize these genetic marvels for specialized roles, from ferocious Maulers to adaptable support Weavers, each capable of empowering allies and weakening foes.

Three New Origins
  • Evolutionary Predators: Push the boundaries of Species Traits by unlocking and combining unique phenotype abilities to craft the ultimate adaptive empire.
  • Starlit Citadel: Solve the mystery of your empire’s biological attackers while boosting hyperlane choke-point strategies with early access to the Deep Space Citadel megastructure.
  • Wilderness: Begin as a sapient planetary ecosystem, a living gestalt of countless lifeforms united in harmony, seeking to spread its consciousness to the stars.
Overhauled Genetic Ascension

Choose from three Ascension paths (Cloning, Purity, and Mutation) and over 18 enhanced Authorities. Customize your genetic ascension by blending Purity, Cloning, and Mutation traditions into a unique path for your play style.

Hives with a Twist

Encounter a Hive Fallen Empire, a fractured hive mind struggling to awake between its three splintered personalities.

Six New Civics
  • Genetic Identification, Crowdsourcing, Familiar Face, Aerospace Adaptation, Shared Genetics, Civil Education
Deep Space Citadel Megastructure

A versatile new defensive station capable of holding off powerful enemy fleets at any system.

Behemoth Fury Crisis Path

The apex predators of the stars are not bound by petty limitations. Cast off the biological weaknesses that hold you back, and become a force of nature.

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The BioGenesis expansion includes:​

  • Gestalt Hive Empires (also unlocked by Utopia)
  • Two biological Shipsets with distinct mechanics from traditional spacecraft
  • Three new Origins
    • Evolutionary Predators
    • Wilderness
    • Starlit Citadel
  • Civics
    • Genetic Identification
    • Crowdsourcing
    • Familiar Face
    • Aerospace Adaptation
    • Shared Genetics
    • Civil Education
  • Deep Space Citadel Megastructure
  • Biological Ascension (also unlocked by Utopia)
    • Expanded with BioGenesis to include a mutable tradition tree that reflects your path through Ascension
  • Exploration of the effects of Biological Ascension on society
  • Advanced Government Forms
  • 16 new genetic Species Traits, including phenotype based traits
  • Portraits that change based on pop strata and leader level
  • The Splintered Hive Fallen Empire
  • Two Diplomatic Rooms and City Sets
  • 7 music tracks
  • And a new Player Crisis Path - Behemoth Fury

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Planned Dev Diary Schedule
March 27​
Biological Ships and Mechanics​
April 3​
Ascension, Traditions, Advanced Governments​
April 10​
Phenotype Traits, Evolutionary Predators Origin​
April 17​
Deep Space Citadel, Starlit Citadel Origin​
April 24​
Hive Fallen Empire, Wilderness Origin​
May 1​
Civics, Behemoth Fury, Preliminary Release Notes​
May 5​
BioGenesis Release Date​


Stellaris: Season 09 Expansion Pass​

The Stellaris: Season 09 Expansion Pass is your gateway to an entire year of cosmic evolution, psionic mysteries, and apocalyptic infernos. With instant access to the exclusive Stargazer Species Portrait, this expansion pass delivers three major content packs that will redefine the Biological and Psionic Ascensions and the most ambitious species pack so far!

Purchasing the Expansion Pass grants access to all four DLCs as soon as they become available.

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Stargazer Species Portrait (Instant Unlock)​

Dream of the stars with this exclusive portrait, available immediately upon purchasing Stellaris: Season 09. Featuring three variations and unique animations, the Stargazer Species Portrait is perfect for players who seek to embody the spirit of cosmic curiosity.

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BioGenesis (Releases May 5, 2025 - $24.99)​

Take command of the forces of life itself in Stellaris: BioGenesis. Engineer living ships and wield advanced genetic tools to shape the destiny of your empire. Will you create a utopia of adaptation and growth or weaponize biology to dominate the stars?

  • Overhauled Genetic Ascension: Choose from three distinct paths—Cloning, Purity, and Mutation—and customize your evolution.
  • Living Ships: Command biological starships that evolve alongside your empire.
  • Player Crisis Path: Unleash the unstoppable Behemoth Fury on the galaxy.
  • Three New Origins: Play as evolutionary predators, a sapient planetary ecosystem, or a fortress civilization.
  • New Megastructure: Construct the Deep Space Citadel to control hyperlane choke points.

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Shadows of the Shroud (Releases Q3 2025 - $19.99)​

The psionic plane holds untold power—but at what cost? Shadows of the Shroud is a complete overhaul of the Psionic Ascension path, introducing new moral dilemmas, Patron allegiances, and a whole new way of interacting with the mysteries of the Shroud.

  • Breach into the Shroud: Shape your empire’s spiritual destiny with a revamped Shroud system.
  • Shroud Panel: Track your empire’s attunement and unlock new powers.
  • Revamped End of the Cycle: The ultimate deal with the devil—can you delay the inevitable?
  • Psionic Auras: Let your Shroud influence shape entire star systems.
  • New Content: Origins, civics, ships, government types, and more!

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Infernals Species Pack (Releases Q4 2025 - $12.99)​

Forge your destiny in the Stellaris: Infernals Species Pack - our most ambitious Species Pack ever. Adapted to relentless heat and volatile landscapes, you wield the power of extreme environments to reshape the galaxy. Will your empire thrive in the heat, or be consumed by the very forces it seeks to command?

  • Player Crisis Path: Burn the galaxy to ashes as your empire thrives in destruction.
  • New Origins: Unearth ancient kin or endure the scorching wrath of a dying sun in two new Origins.
  • Volcanic Worlds: A new planetary class with unique districts, events, and archaeological sites.
  • New Species & Customization: Ships, portraits, civics, and more!

The Stellaris: Season 09 Expansion Pass is now available for purchase for $44.99 or regional equivalent, a 20% discount over purchasing the contents individually.​


What’s Next?​

This Thursday we’ll flesh out the bio-ships!

See you then!

MEAT SHIPS! MEAT SHIPS! MEAT SHIPS!


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BioGenesis is now available for pre-purchase for $24.99 or regional equivalent,
or with a 20% discount as part of the Stellaris: Season 09 Expansion Pass, which is available now for $44.99 or regional equivalent.
 
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A lot of the shroud is ripped from 40k. While I haven't read the last books of the Horus Heresy series from what I understand the Chaos gods were perfectly happy to engineer a situation where a new god rises that would destroy the galaxy. Since they exist outside of time and not tied to any particular galaxy, or even universe, it doesn't matter to them.

Same could be the answer for the become the crisis. I don't remember who but a dev has said that their interpretation is that the engine doesn't work properly. All it does is smeer the debris of the ascending species across the shroud and blow up a galaxy in the interim.

Which is one of the reasons I'd like Galactic Nemesis to get a rework. Make it more about the shroud and take out the scrappy ship stuff. Have there be a clear link of menace along the lines of your species observing the effect of death, and then gigadeath, on the shroud. Then by studying the ripples it causes and the thinning of the veil they develop a means to engineer a galactic sacrifice big enough to punch a hole into it.
that would make it more interesting. I also dont like the idea of the crisis not working "period" like the cosmogenesis implies a good end unless you dumb enough to go into the black hole of the dimensional horror or into the shrroud without a patron
 
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The new megatruture is a gigastructure which can be built more than one or a simle megastructure with one per empire? If its for defense its better if we can build more.
 
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Hah, called it. I suspected there would be a Genetic DLC, a Psionic DLC and then something else to justify Season 9. Yet I do have a couple comments. Firstly, I might be in the minority when I say this, but I am quite displeased we are getting more "Advanced Authorities". It's bad enough trying to remember the 14 Cybernetic + 10 Synthetic Authorities that came with Machine Age and I'm not even counting Cybernetic Creed authorities either. I strongly recommend detaching Advanced Authorities from Ascension and instead have them unlock with the 3rd Civic via Galactic Administration. Furthermore, we could customize our Governments such that the only thing set in stone is the Election mechanism. Everything else, the player could choose, including what to add when Advanced Authorities are unlocked.

The other thing I'd like to see is new Characteristic Traits and the means to upgrade them. Lithoids get royally shafted since there's no remedy for their Pop Growth or better yet Assembly malus. If I were to Genetically Ascend, I'd like to see a means of mitigating or removing that outright. As for Characteristic Traits, you mean to tell me there's no difference between a Human and other Biological lifeforms? I mean yeah we have "Traits", but a Human should be different than a Mammalian species type in some manner. Be it a Habitability malus on certain climate types, CG usage or something to set them apart.
 
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This all seems really cool, just a shame it comes with the gameplay changes that will probably leave the game in a horribly buggy and unbalanced state for at least most of the year. Not going to buy it yet with the expectation that this will be the case.

I also worry about the Psionic ascension overhaul, as the dev team has a tendency to replace chaotic, interesting systems with more rigid, predictable and "gamified" ones. The "playing with fire" aspect of Psionic ascension is the biggest appeal, and it will suck if they remove all the risk from it and turn it into yet another level-up progression system where nothing can go wrong unless you choose the End of the Cycle.
 
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They look interesting, Im more amused by the fact that this... mess of a beta.. is going to be ready for launch in six weeks... im not ordering this until i see what a mess that release is LOL
 
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I doubt this is the plan but I really hope the
  • Portraits that change based on pop strata and leader level
are applied to existing portraits instead of being exclusive to new ones like in Machine Age. The features can be locked behind the DLC, sure, but I'd bet most people, like me, have a favorite portrait already they'd like to see expanded upon. For example, it'd be nice if the new features worked on the UNE instead of a separate human like the cyborgs.
 
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A meat-focused expansion, made by a Swedish company, needs to include at least one reference to Swedish meatballs.
Going by the words of citizen G'Kar, they are a universal hallmark of sentience.

Edit:
"Sweetish Meatballs" is one potential, on-the-nose name for an anomaly or digsite...
 
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This all seems really cool, just a shame it comes with the gameplay changes that will probably leave the game in a horribly buggy and unbalanced state for at least most of the year. Not going to buy it yet with the expectation that this will be the case.

I also worry about the Psionic ascension overhaul, as the dev team has a tendency to replace chaotic, interesting systems with more rigid, predictable and "gamified" ones. The "playing with fire" aspect of Psionic ascension is the biggest appeal, and it will suck if they remove all the risk from it and turn it into yet another level-up progression system where nothing can go wrong unless you choose the End of the Cycle.
For the psionic they did say there would be more moral choices and risk involved with patron allegiances. Tbh the current psionic ascension had nothing of "playing with fire" was far too safe and boring. Was basically roll a slot machine every few years for some minor boost.
 
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I doubt this is the plan but I really hope the
  • Portraits that change based on pop strata and leader level
are applied to existing portraits instead of being exclusive to new ones like in Machine Age. The features can be locked behind the DLC, sure, but I'd bet most people, like me, have a favorite portrait already they'd like to see expanded upon. For example, it'd be nice if the new features worked on the UNE instead of a separate human like the cyborgs.
I think i recall reading about progressive portaits like the machine and cyber ones but from what i read they evolve as they level up.
 
From what I've seen in the 4.0 beta threads...it is not going to be ready for release in that time, never mind ready concurrently with a new mechanics/units changing set of DLC. You're just adding more tires onto the tire fire. Like...look I get it, you have to monetize this whole...*waves hands at the beta tire fire*... But...the primary problem I've found with Paradox developmental is that they bust into a burning room with a singular half-exhausted extinguisher, that 30% of the time is the wrong extinguisher for the fire they're fighting, but also like...a platoon of flamethrowers...like fix the fires you've set first before lighting new ones.

I'd be more positive about these announcements if, the 4.0 release was a standalone, free update....and then after the month- 6 months of bug fixing that always comes from these overhaul updates, THEN and only then we'd start getting new mechanical DLC stuff...
 
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