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Paradox Development Studio · Paradox Interactive·$49.99
Dec 4, 2025 · 5mo ago

Stellaris 4.2.3 patch released (checksum f58a)

AI summary2w

Patch 4.2.3 focuses on balancing the Infernals and Crisis Path mechanics, fixing various trait/civic restrictions for Thermophiles, and resolving several stability and gameplay bugs.

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Buffs11

  • Thermophiles
    • Thermophiles are now compatible with the Ocean Paradise Origin, expanding viable build options.Ocean Paradise
    • Thermophiles can now select the Aquatic trait, improving their versatility.Aquatic
    • Thermophiles can now select the Agrarian trait.Agrarian
    • Thermophiles are now able to select the Agrarian Idyll civic.Agrarian Idyll
    • Thermophiles are now able to select the Anglers civic.Anglers
  • Crisis Path
    • Entropy Conduit:Entropy Conduit ships are now significantly more durable.+2000
    • Entropy Conduit:Entropy Conduit ships received an armor boost.+1000
    • Entropy Conduit:Entropy Conduit ships received a shield boost.+2000
    • Ember Ships:Removed alloy requirement for upgrading Ember Ships, easing fleet maintenance.AlloysRemoved
  • Thermal EngineerThermal Engineer now provides a bonus to research station output instead of cost reduction.+4% %
  • Spawning DronesReduced the alloy upkeep for Spawning Drones, making them cheaper to maintain.2.52 alloys

Nerfs8

  • Infernal Livestock
    • Initial reduction of alloy output for Infernal Livestock.1.51 alloys
    • Further reduction of alloy output for Infernal Livestock to balance economy.10.75 alloys
  • Crisis Path
    • Entropy Harnessing:The Entropy Harnessing edict now costs more energy from technicians.-1-2.5
    • Entropy Harnessing:Reduced the amount of entropy generated by technicians under the edict.0.50.4
  • Thermal EngineerRemoved the engineering research cost reduction from the Thermal Engineer councilor.-1%Removed %
  • Pyromanic PriestReduced the consumer goods upkeep reduction provided by the Pyromanic Priest.-3%-2% %
  • Galvanic SymbiosisReduced the planetary refund modifier for Galvanic Symbiosis.10.75
  • Distribute Living MetalIncreased the cost of the Distribute Living Metal decision.500LM700LM LM

Bug fixes1

  • Infernal LivestockFixed a bug where Infernal Livestock were incorrectly classified as Specialists.SpecialistRemoved

Other changes2

  • Crisis Path
    • Life Seeding:Life Seeding now requires a specific crisis resource instead of generic energy.1000 Energy2500 Entropy Crystals
    • Critical Mass:The UI now clearly displays current and required systems for the Critical Mass perk.Added

subjects affected (8)

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official notes
Stellaris · Dec 4, 2025
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Patch history

see all 5

  1. Stellaris 4.3 "Cetus" Open Beta Updated (2025-12-18)
    Dec 19, 2025 · 5mo
    +95
  2. Stellaris Patch 4.2.4 released (checksum 7a03)
    Dec 11, 2025 · 5mo
    +5
  3. 4.2.2 Hotfix now available
    Nov 27, 2025 · 5mo
  4. 4.1.7 Patch Released (checksum 6486)
    Nov 3, 2025 · 6mo
    +52

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