The 4.3 'Cetus' Open Beta introduces a comprehensive rework of the Refugee system with a new 'Refugee Attraction' modifier, significant naval capacity and ship balance overhauls, and systemic changes to Empire Size and job efficiency.
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▲Buffs9
- RefugeesRefactored refugee calculations; pops are now more likely to flee to empires where their species is dominant and pick planets more intelligently.
- Perdition BeamsPerdition Beams now deal damage to enemy ships within a certain range of the target.0→Added
- Machine Intelligence RulerAdded a significant amenity bonus per colony per ruler level.0→500 Amenities
- Naval CapacityIncreased base naval capacity to 40.20→40 units
- Empire SizeThe base amount of Empire Size generated by pops has been halved.100%→50% %
- Frigates
- Frigates now move at Destroyer speed instead of Cruiser speed.Cruiser→Destroyer
- Added +1 Utility and Aux slot to Frigates.Standard→+1 Utility/Aux slots
- Survivor TraitThe Survivor species trait now grants a reduction to housing and amenities usage.Standard→Reduced
- Colonial SpiritThe Colonial Spirit modifier now grants 10% pop growth.0%→10% %
▼Nerfs5
- Ion CannonsIon Cannons now deal less collateral damage at a shorter range compared to Titan Perdition Beams.High→Low
- Machine Intelligence RulerReduced the empire size reduction provided by the Machine Intelligence Ruler.-3%→-1% %
- Cosmogenesis
- Slower progression for Cosmogenesis crisis currency gains.Fast→Slower
- Fallen Empires now directly oppose experiments, leading to Total War at stage 5.Standard→Harder
- Empire SizeThe base amount of Empire Size generated by colonies has been increased to 20.Low→20 units
◆Other changes2
- RefugeesIntroduced Refugee Attraction modifier based on ethics, civics, and origins to determine how likely pops are to flee to an empire.→Added %
- Naval CapacityMost ships now use 5x more naval capacity than previously.1x→5x multiplier
subjects affected (10)
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Patch history
- [Dev Team] stellaris_test updated with 4.4.2 (checksum 38b9)Jun 15, 2026 · 3w+1−2→
- Stellaris Patch 4.2.4 released (checksum 7a03)Dec 11, 2025 · 6mo+5→
- Stellaris 4.2.3 patch released (checksum f58a)Dec 4, 2025 · 7mo+11−8→
- →4.2.2 Hotfix now availableNov 27, 2025 · 7mo
- 4.1.7 Patch Released (checksum 6486)Nov 3, 2025 · 8mo+5−2→
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