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Stellaris
Stellaris
4.3|Dec 11, 2025
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Stellaris 4.3 "Cetus" Open Beta now available

5/5 Game-Changing

The 'Cetus' Open Beta introduces a massive naval capacity overhaul with 5x ship usage costs and a fundamental economic rebalance to curb power creep.

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Key Changes

  • 1Naval Capacity usage increased 5x for most ships (Corvettes: 5, Battleships: 40)
  • 2Economic rebalance significantly reduces job efficiency and stability bonuses
  • 3Technology costs halved to compensate for reduced research job output
  • 4Unemployment reworked with immediate strata demotion at month-end
  • 5Empire Size from pops halved, while base colony size increased to 20
  • 6Frigates buffed with Destroyer-level speed and additional utility slots
  • 7Armor and Shields now provide Hardening based on their tier
  • 8Massive nerf pass on high-tier species traits like Erudite and Dark Matter Engines
  • 9Base Naval Capacity increased to 40 for all empires
  • 10Genesis Guides civic rewards and modifiers significantly reduced

All Changes

🚀Naval Systems(17)

  • nerfCorvette: Corvette naval capacity usage increased to 5.
  • nerfFrigate: Frigate naval capacity usage increased to 8.
  • nerfDestroyer: Destroyer naval capacity usage increased to 10.
  • nerfCruiser: Cruiser naval capacity usage increased to 20.
  • nerfBattleship: Battleship naval capacity usage increased to 40.
  • nerfTitan: Titan and Bio-Titan naval capacity usage increased to 80.
  • nerfJuggernaut: Juggernaut and Colossus naval capacity usage increased to 100.
  • nerfMauler: Mauler naval capacity usage adjusted to 4/6/8.
  • nerfWeaver: Weaver naval capacity usage adjusted to 8/12/16.
  • nerfHarbinger: Harbinger naval capacity usage adjusted to 16/24/32.
  • nerfStinger: Stinger naval capacity usage adjusted to 32/48/64.
  • changeNanite Swarmer: Nanite Swarmers naval capacity usage set to 1.
  • buffGalactic Nemesis: Galactic Nemesis Marauding ships now have 20% less naval capacity usage than standard ships of their size.
  • buffNaval Capacity: Base naval capacity for all empires increased to 40.
  • nerfAnchorage: Anchorages now provide +5 Naval Capacity, and +3 with a Naval Logistics Office.
  • nerfAnchorage: Anchorages now have Trade Upkeep equal to the Naval Capacity they provide.
  • buffBubbles: Bubbles and other space fauna variants no longer consume Naval Capacity.

⚔️Ship Combat & Components(7)

  • buffPerdition Beam: Titan Perdition Beams and Ancient Ruination Glare now deal collateral damage to other ships.
  • buffArmor: Higher tier Armor and Shields now grant (tier - 1)% Armor or Shield Hardening.
  • buffCrystal Hull Plating: Crystal-Infused and Crystal-Forged Plating now grant flat damage reduction (up to -8 for Large Forged).
  • buffFrigate: Frigates are now faster (Destroyer speed), have +1 Utility and Aux Slot, and use Destroyer-sized reactors.
  • buffDisruptors: Disruptors now start with 50% bypass at Tier 1, increasing to 80% at Psionic tier, and deal +25% damage to shields.
  • changeTorpedoes: Torpedo multiplicative damage bonus reduced to 20% of former values to match ship size increases; maximum bonus increased.
  • nerfTorpedoes: Increased power usage of Torpedoes and Energy Torpedoes on standard ships.

💰Economy & Jobs(8)

  • changeUnemployment: All unemployed pops now demote to Civilian or Maintenance Drone strata at the end of the month.
  • buffTechnology: Base technology costs reduced by 50% to offset reduced job-based research production.
  • nerfStability: Most stability bonuses reduced to one-half or one-third of previous values.
  • nerfJobs: Most job efficiency and production modifiers have been significantly reduced.
  • nerfSoldier: Soldiers are now Specialist/Complex Drone jobs with 1 Alloy upkeep.
  • nerfPlanetary Ascension: Planetary Ascension now increases Designation effects by 10% per tier instead of 25%.
  • buffPlanetary Deposits: Special planetary deposits are now 4x more common.
  • changeEcumenopolis: Arcology Project and Ecumenopolis districts now cost Alloys instead of Minerals.

🧬Species Traits(5)

  • nerfErudite: Erudite researcher job efficiency reduced from +30% to +20%.
  • nerfFertile: Fertile pop growth speed reduced from +30% to +20%.
  • nerfDark Matter Engines: Dark Matter Engines job efficiency reduced from +40% to +20%; upkeep increased to 0.03 Dark Matter.
  • nerfVat Grown: Vat Grown organic pop assembly reduced from +33% to +25%.
  • changeVolatile Mote Reactor: Volatile Mote Reactor habitability bonus replaced with +10% Worker/Menial efficiency; upkeep increased to 0.05.

🏛️Civics & Origins(4)

  • nerfGenesis Guides: Genesis Guides rewards for colonizing and uplifting reduced by 50-75%.
  • nerfOvertuned: Overtuned origin no longer grants early access to genetic ascension.
  • nerfVirtuality: Clustered Capacity (Virtuality) job efficiency reduced from +175% to +75%.
  • buffDark Consortium: Dark Consortium now starts with a larger Dark Matter deposit.

Summary

The Reckoning

Stellaris 4.3 'Cetus' enters Open Beta with a primary focus on scaling back economic and naval power creep. Internally dubbed 'The Reckoning,' this update fundamentally alters how fleets are constructed and how empires manage their resources and populations.

Naval Overhaul

Ship Naval Capacity usage has been significantly increased across the board. Corvettes now require 5 capacity, while Battleships require 40, representing a roughly 5x increase for most ship classes. To compensate, base naval capacity has been increased to 40, and Frigates have received significant buffs to speed and utility to find a more distinct role in the new meta.

Economic Rebalance

Job efficiency and stability bonuses have been slashed across the board to make planetary management more challenging. Research output from jobs has been reduced, though this is offset by a 50% reduction in overall technology costs. Unemployment has been streamlined with immediate strata demotion, and Empire Size mechanics have been adjusted to favor fewer, more developed colonies.

Newer →Stellaris 4.3 "Cetus" Open Beta Updated (2025-12-18)Dec 19, 2025

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