4.5.3|Oct 28, 2026

Stellaris 4.5.3 Open Beta Released

3/5 Moderate

BETAResource harvesting buildings are now limited to one per planet alongside a massive overhaul of Habitability logic and UI systems.

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Key Changes

1Strategic resource harvesting buildings (Betharian, Gas, Crystal, Motes) limited to 1 per planet
2Comprehensive Habitability system overhaul fixing display caps and adding 'Adapted Habitability' concepts
3Cyberization situation speed bug fixed, preventing it from being stuck at -99%
4Multiplayer stability improved with exhaustive out-of-sync checks for all entities
5District specialization logic improved to correctly convert when colony ownership changes
6Deluge Machine functionality expanded to allow turning Gaia worlds into Ocean worlds
7Pleasure Seekers origin buffed with additional starting buildings and resources
8Job tooltips redesigned to show effective workforce and resources produced for overlords
9Fixed various galaxy generation issues where civic/origin buildings would go missing
10Armies now correctly return to transport ships if a war ends during combat

All Changes

💰Economy & Buildings(7)

nerfBetharian Processing: Betharian Processing buildings are now limited to one per planet
nerfExotic Gas Capture: Exotic Gas Capture buildings are now limited to one per planet
nerfRare Crystal Extraction: Rare Crystal Extraction buildings are now limited to one per planet
nerfVolatile Motes Harvesting: Volatile Motes Harvesting buildings are now limited to one per planet
buffVirtual Bliss Plaza: Virtual Bliss Plaza and Omni-Bliss Nexus now automate Logistic Drone jobs for Gestalt empires
fixBranch Office: Queued buildings for branch offices or subject holdings no longer count towards the building limit of the other holding type
fixFallen Empire Buildings: Fallen Empire buildings no longer provide job automation to Virtual Synthetic empires

🏛️Empire Origins & Civics(6)

buffHedonists: Hedonists on the Decadent Lifestyle use 50% fewer amenities while the empire has no Consumer Goods deficit
buffTankbound: Tankbound empires now start with an additional Generator District instead of converting existing districts
fixTankbound: Tankbound Infernal empires no longer start with 3 extra energy districts on their capital
buffPleasure Seekers: Pleasure Seekers now start with extra Civilian Industries and Holo-Theatres to assist with early-game resources
fixInfernal: Infernal empires with Tree of Life or Here Be Dragons now correctly start with an Agriculture District
fixExemplary Genetics: The Exemplary Genetics tradition now correctly reduces the cost of advanced genetic traits

🌍Habitability(8)

fixHabitability: Fixed Habitability display cap; values up to 175% or 250% now show correctly across all UI panels
newAdapted Habitability: Added 'Adapted Habitability' game concept explaining benefits of exceeding 100% habitability
newVolcanic Climate Mods: Added Volcanic Climate Mods granting Adapted Habitability on Volcanic Worlds
fixMutation Authority: Fixed Mutation Authority tooltip incorrectly claiming a 175% ceiling when it grants 125%
fixMutagenic Habitability: Fixed Mutagenic Habitability species being able to take Hydrocentric without the Aquatic trait
fixDry Climate Mods: Fixed Dry Climate Mods incorrectly granting Adapted Habitability on Volcanic Worlds
fixClimate Mods: Species losing a Climate Mods trait now gain a random preference from that climate; Aquatic species always get Ocean World Preference
fixAuto-Modding: Fixed AI resettlement and auto-migration incorrectly counting Auto-Modding when judging destinations

⚙️Gameplay Systems(8)

fixCyberization: Cyberization situation speed should no longer get stuck at -99% after dealing with spiritualists
buffDeluge Machine: Deluge Machine can now turn Gaia worlds into Ocean worlds
fixArmies: Attacking armies are moved back to transport ships if a war ends during active combat
fixSubject Colonies: Occupied subject colonies no longer produce job resources for their overlord
changeOverlord: Resources produced for an overlord now scale with job workforce instead of pop count
fixPops: Pops can no longer hide in the purge category to avoid working in mines
fixThermophile: Thermophile livestock no longer consume food
buffLogistic Ships: Automated logistic ships now consider bringing loot back to arkships regardless of distance

🖥️UI/UX(5)

changeUI: Job tooltips now show resources produced and consumed by the job itself rather than the pops working it
changeFleet UI: Fleet actions that are unavailable due to cost or cooldown now appear disabled in the right-click menu with reasons in the tooltip
changePop Summary: The Monthly Pop Summary now includes unusual sources like Necrophaging and events
fixObservation Post: Fixed the 'Go to observation post' button in Planet View for Pre-FTL civilizations
changeVisuals: Set ship RGB values to be identical to map RGB values for visual consistency

📡Stability & Multiplayer(4)

fixMultiplayer: Multiplayer out-of-sync checks now compare every colony, fleet, ship, and country for faster detection
fixStability: Fixed a rare crash occurring when a subject became independent after its overlord was destroyed
fixMultiplayer: Fixed out-of-sync errors occurring after a player hot-joins a game
fixDeep Space Citadel: Downgrading a Deep Space Citadel in multiplayer no longer causes an out-of-sync

Summary

The 4.5.3 'Cygnus' Open Beta introduces significant balance adjustments to planetary economy and a comprehensive sweep of bug fixes. Key highlights include a restriction on strategic resource harvesting buildings to one per planet and a major technical cleanup of the Habitability system, ensuring values above 100% (Adapted Habitability) are correctly calculated and displayed. The update also focuses heavily on multiplayer stability with more rigorous out-of-sync checks and improved logic for district specialization when colonies change hands.

← OlderStellaris 4.5.2 released [checksum 9776]Oct 6, 2026

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