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Xenomorph Domain

 

Description:

A large adult hive-mind overhaul for Stellaris built around the perfect organism. Play the Hive itself — grow the brood from ovomorph to Queen Mother, harvest hosts, subjugate broodstock tributaries, and remake worlds into living resin. Or stand on the other side of the glass: captor empires can contain, study, farm, and profit from the most dangerous species in the galaxy.

Military, economy, and exploration stay in a cold biological-horror register; the adult content lives inside the systems built for it, and stays suggestive rather than explicit. Built and validated against the current Stellaris version with all DLC in mind.

This is a living WIP — updates ship frequently, and saves are best started fresh after major updates.

 

Current Features:

 


By the numbers:
      139 buildings  •  146 tradition picks across 23 trees  •  16 ascension perks
      31 civics  •  9 origins  •  117 species & leader traits
      3 prescripted empires  •  3 AI empire personalities
      99 jobs  •  23 armies  •  121 technologies  •  538 events  •  21 planet classes

The Hive:
      An egg-and-offspring economy: drone clutches and royal egg-layers produce Xenomorph Eggs; brood tenders mature them into Offspring that pay for your specialist chains, growth decisions, and branch-office seeding. Run the reserves dry and the brood starves.
      A full royal ladder — Drones, Warriors, Praetorian and Paladin guards, Queens, Brood Queens, Empresses, the Queen Mother — expressed as jobs, armies, and leaders.
      The Hive Evolution Chamber: converting captured organics earns Evolution Points; spend them in an edict-opened evolution menu to cultivate exotic war-castes (Widow, Pyrogen, Puppeteer, Warlock). More castes are tech-grown (Ravager, Boiler) or host-line bred (Runner, Lurker, Crusher, Charger, Neomorph and more).
      Host-line subspecies: consume reptilian, avian, lithoid, aquatic and other hosts to unlock hybrid strains with their own traits and armies.
      World consumption: cultivate hive worlds, deepen them into resin networks, and end at the Black Resin Brood-World — or strip-mine the crust of everything else.
      Brood-Tribute Subjugation: defeated empires become oppressive broodstock vassals the Hive milks forever. The galaxy's answer: a Restraint casus belli that frees every subject the Hive holds.
      Divergent Brood Ecologies: fully-infested worlds roll permanent ecological roles — Spawning Grounds, Hunting Grounds, Synaptic Shoals, Acid Marshes, Carrion Fields.
      Innate galactic infestation that spreads through contact, with civics that amplify the strain.
      Custom bombardment stances, war goals, espionage operations, archaeology, and a genetic-memory research economy where production drives reproduction.

The Captors:
      Non-hive empires can capture, contain, and exploit the Xenomorph: containment labs, specimen vaults, breeding programs, rendering works, menageries, and a captive-Queen interactive menu with its own long-form event trees.
      Captor civics from corporate trafficking syndicates to biosecurity directorates and eradication mandates — with matching tradition trees on both sides of the glass.
      Captive Pits and capture pipelines: raiding stances, battlefield leader captures, and fleet-wreck harvesting feed your holdings.

Both sides:
      23 tradition trees covering captures, brood development, infestation, containment, and ascension — plus 16 ascension perks.
      3 ready-made prescripted empires and 3 AI personalities so the galaxy fights (or farms) the Hive without you.
      Compat patches for Ethics & Civics: Bug Branch and Expanded Gestalts: Forgotten Queens ship alongside the mod.

Requirements:

      Lustful Void by Lithia<3   —   REQUIRED!
      Calcifire's Trait Pack for LV   —   REQUIRED!
      UI Overhaul Dynamic   —   strongly recommended (no patch needed)

 

Installation:

      Extract the zip contents to (...\Documents\Paradox Interactive\Stellaris\mod) — if you don't have a "mod" folder, create one there.
      The archive contains "Hive mods.mod" and the "Hive mods" folder; both go directly into the mod folder.
      Delete the old mod folder and .mod file before extracting a new version. Clean installs are the supported path.

 

Load order:

      Lustful Void
      Calcifire's Trait Pack for LV
      —
      Xenomorph Domain
      —
      XD Compat - Bug Branch (only if you use Bug Branch — load AFTER it)
      XD Compat - Forgotten Queens (only if you use Forgotten Queens — load AFTER it)
      —
      UI mods last

 

Compatibility:

      UI Overhaul Dynamic: works without a patch.
      Ethics & Civics: Bug Branch and Expanded Gestalts: Forgotten Queens: use the included compat patches (they retire overlapping civics so the two ecosystems don't double up).
      Do NOT run this mod alongside Xenomorph Species Rework or Xenomorph Infection — Xenomorph Domain grew from ported and heavily-diverged versions of those systems, and running both will conflict.

 

Changelog:

 


New features:
      Added the Hive Evolution Chamber — an edict-opened evolution menu (styled as a hive hex-lattice board) where Evolution Points earned from converting organics unlock four exotic war-castes: Widow, Pyrogen, Puppeteer, and Warlock.
      Added two research-grown assault castes: the Ravager (melee elite) and the Boiler (long-range acid artillery).
      Added Brood-Tribute Subjugation — the broodstock-harvest war goal now permanently vassalizes the defeated as an oppressive tributary — and the Restraint casus belli, letting other empires free every subject the Hive holds.
      Added Divergent Brood Ecologies: fully-adapted non-resin worlds roll one of five permanent ecological roles.
      Added three world-doctrine hive civics (Synaptic Ganglion, Metabolic Strip-Mining, Digestive Assimilation) and two egg-economy amplifier civics (Fecund Brood, Hatchery Doctrine).

Balance & design:
      A full consolidation sweep removed or merged systems that duplicated each other — dead deposits, orphaned traits and technologies, redundant buildings — and gave two empty tradition picks real effects.
      Egg Caretakers now grant their full intended egg-storage bonus.
      Several hive-form (gestalt) jobs were reconnected to the mod's own economic categories, so hive empires properly receive their job-output amplifiers.
      The Galactic Infestation civic was renamed Virulent Strain and reworded: the infestation itself is innate to every Xenomorph empire — the civic only amplifies it.

Fixes:
      Hive-world conversion projects now correctly enforce one project at a time per world (and mutually exclude with vanilla arcology projects).
      The queen-capture decision now actually resolves — previously it charged its full cost and silently did nothing — and respects its cooldown.
      Fixed all three prescripted empires being hidden from the empire-selection list.
      Fixed seven civics leaking into the wrong empire types' selection menus.
      The Black Resin origin's starting capital now seeds the correct hive-world districts.
      Custom bombardment stances now display their proper names.
      Cleared every startup parse error the mod produced, and fixed several tooltips that failed to render.
      Descriptor paths are now portable — installs work on any machine without editing the .mod file.

UI & icons:
      31 new custom icons: 12 civic icons, 12 job icons, and 7 tradition pick icons (the Brood Harvest tree no longer shares one borrowed icon).
      A custom green-yellow hex-lattice banner for the Hive Evolution Chamber.

Known issues:
      The hive primer popup can render taller than the screen under UI Overhaul Dynamic — a paginated version is in progress.

 

Inspiration & Credits:

      Lithia<3 — Lustful Void, the foundation this mod stands on (and the inspiration for this page).
      Calcifire — Calcifire's Trait Pack for LV.
      NickVirgo — Xenomorph Species Rework and Xenomorph Infection, whose early versions seeded several of this mod's systems before they diverged into their current forms.
      The Alien / Alien vs Predator franchise — the perfect organism itself: ovomorphs, facehuggers, Queens, the Alien 3 runner, Covenant's Neomorphs.
      TGMC (/tg/station Marine Corps) — the xenomorph caste roster that inspired the war-caste system.
 

Permissions:

      Franchise concepts belong to their respective owners; borrowed inspiration is credited above.
      Submods are welcome as well as custom patches that may be uploaded to a patch list on the main page

      Owners of any art or characters featured in this mod have the right to request it be removed from the mod at any time without reason needed.
 

 

 

Edited by Xenodragon54
updated Menu!


What's New in Version 5.3

Released

Fixes
 
- The monthly colony flicker is gone. A one-time colony-setup routine was wrongly re-running every month, briefly stamping hive districts onto worlds that can't hold them (the ruined-buildings / district-specialization flash at each month's start) and re-adding buildings that a mismatched self-destruct check immediately tore down. The setup now runs exactly once per colony, two self-destruct checks were corrected, and colonies without any xenomorph population can no longer end up with no valid capital building at all.
- The unavoidable start-of-game collapse is gone. Every hive start was seeded with a research building that drains Xenomorph Offspring — before any offspring producer exists — guaranteeing a deficit spiral into a ten-year bankruptcy that demolition couldn't escape. That building is no longer force-seeded; instead, every hive colony now starts with a Hatchling Nursery, the offspring producer the economy expected all along.
- The Restraint war goal has its icon. The fleet councilor of the Ravenous Brood shows its name and description again, and two small compat-patch script errors were corrected.
- The introduction primers no longer overflow the screen. Both orientation primers (hive and captor) were single walls of text taller than any vanilla event window — oversized under UI Overhaul Dynamic. Each is now a short cover page with per-topic sections you browse like a menu; nothing was cut.
- Three prescripted Xenomorph empires are back. All three preset empires were being silently hidden from the empire-selection list; they have been rebuilt and appear again.
- Civic menus behave. Hive-only Xenomorph civics no longer appear in other empires' civic lists, and the anti-xenomorph containment civics no longer appear for gestalt empires.
- Galactic Infestation clarified. The infestation mechanic is innate to every Xenomorph empire and always has been; the civic that merely amplifies it has been renamed Virulent Strain so it no longer reads as the mechanic itself. No mechanical change.
- Black Resin origin start fixed. The origin's homeworld now seeds the correct hive-world districts, matching resin worlds reached through the normal decision path.
- Deep-rescan repairs. A full verification pass surfaced and fixed a family of silently dead script:
  - The hive-world conversion decisions' one-project-at-a-time interlock now actually works (and correctly locks against the vanilla arcology project again).
  - The queen-capture decision previously consumed its full cost and did nothing; it now fires its outcome, and its cooldown is enforced.
  - Several purge-related outcomes that never fired now do.
  - The egg-storage caretaker now delivers its full intended empire egg-capacity bonus.
  - Hive-empire versions of several jobs were missing their intended job-category bonuses; gestalt empires now receive the same amplifiers as everyone else.
  - Both custom orbital bombardment stances now display proper names instead of raw keys.
  - Two startup parse errors and several unreadable tooltip lines were cleared.
 

Known issues:
      The hive primer popup can render taller than the screen under UI Overhaul Dynamic — a paginated version is in progress.


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