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Stellaris Experimental Patch 4.5.3 Adjusts AI Resource Logic and Fixes Tooltip UI
Stellaris version 4.5.3 arrives on the experimental test branch, overhauling how AI empires manage resource stockpiles and fixing persistent UI tooltip bugs.
Stellaris Patch Notes and Update History
Browse recent Stellaris updates, balance changes, fixes and patch history.
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Stellaris Patch 4.5.3 Fixes Habitability Overhauls and Out-of-Sync Errors
Paradox releases Stellaris update 4.5.3, addressing habitability calculations, multiplayer out-of-sync triggers, and specific district specialization limits across empires.
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Stellaris Update 4.5.2 Refines Nomadic Empires and Balances Covenants
Stellaris update 4.5.2 Cygnus brings balance adjustments to civics, fixes numerous progression bugs, and expands terraforming options for nomadic knights. The patch also improves policy management and addresses late-game stability.
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Stellaris 4.5.2 Cygnus Update Previews Balance Overhauls and Nomadic Adjustments
Paradox outlines tentative changes for Stellaris with the 4.5.2 Cygnus update, focusing on nomadic mechanics, armor and shield upkeep, and numerous bug fixes. The patch aims to refine empire policies and fix persistent desyncs and crash causes.
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Stellaris Cygnus 4.5.1 Hotfix Targets Out of Sync Errors and Fleet Automation
Stellaris version 4.5.1 arrives as a hotfix addressing multiplayer out-of-sync issues, fleet automation quirks, and multiple crash bugs. The update also includes a specific quality-of-life balance adjustment for the Synaptic Lathe.
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Stellaris Update 4.5 Cygnus Preliminary Patch Notes
Stellaris update 4.5 Cygnus introduces a major overhaul to pop groups, removing division by ethics and factions while overhauling ship design policies and breaking save compatibility. The release also packs hundreds of bug fixes alongside extensive balance adjustments for nomad empires and cyberization.
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Stellaris 4.5 'Cygnus' Open Beta Update 5 Refines Factions and Starbase Weapons
Stellaris Open Beta Update 5 for the 'Cygnus' 4.5 branch brings sweeping improvements to starbase weapon modules, faction behaviors, and automated ship design logic. The patch also tackles numerous bug fixes regarding nomad empires, purge vassals, and UI tooltips.
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Stellaris 4.5 'Cygnus' Open Beta Update 4 Overhauls Pop Groups and Policies
Stellaris Open Beta Update 4 introduces a breaking change that replaces traditional pop division by ethics or factions with a percentage-based membership model. The patch also adds new fleet doctrine policies, expands nomad mechanics, and resolves numerous game-crashing bugs.
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Stellaris Cygnus Open Beta Update 3 Overhauls Pop Groups and Nomads
Stellaris Open Beta Update 3 rolls out major breaking changes to pop groups, refines Nomad mechanics, and fixes widespread regression bugs.
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Stellaris 4.4.6 Hotfix and Pegasus Patch Address Automation and Reserves
Stellaris Hotfix 4.4.6 and the 4.4.5 Pegasus patch introduce a Resource Abundance slider, fix permanent science ship losses, and rebalance Operational Reserves.
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Stellaris 4.4.5 'Pegasus' Update Refines Nomads, Automation, and Reserves
The 4.4.5 'Pegasus' patch for Stellaris introduces a galaxy generation resource abundance slider, per-action fleet automation toggles, and overhauled Operational Reserves mechanics for nomadic factions alongside dozens of bug fixes.
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Stellaris 4.4.5 'Pegasus' Open Beta Patch Notes
Stellaris version 4.4.5 'Pegasus' opens for testing with a new Resource Abundance slider, overhauled Operational Reserves, and numerous fixes.
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Stellaris Patch 4.4.4 Overhauls Nomads, Arkships, and AI Logic
Stellaris update 4.4.4 brings sweeping adjustments to Nomad mechanics, Arkship habits, and automation behavior. The patch also tackles a long list of crash fixes, UI improvements, and multiplayer stability issues.
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Stellaris Open Beta 4.4.4 Pegasus Focuses on Balance and Stability
Stellaris launches the 4.4.4 Pegasus Open Beta on Steam, tackling multiplayer desyncs, nomadic mechanics, and AI behavior. The opt-in test precedes next week's planned full release.
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Stellaris Hotfix 4.4.3 Resolves Civic Requirements and Diplomatic Bugs
The Stellaris 4.4.3 hotfix fixes critical bugs tied to civic requirements, Waystation Pacts, and Defender of the Galaxy opinion modifiers. The patch is live now on Steam and GOG, with the MS Store version coming soon.
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Stellaris Pegasus 4.4.2 Hotfix Addresses Situation Speeds and Crashes
Stellaris 4.4.2 'Pegasus' hotfix reduces Forever Cruise situation speeds, extends contract grace periods, and squashes multiple stability crashes. The update is available now on Steam and GOG.
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Stellaris Open Beta 4.4.2 Update Fixes UI Crashes and Adjusts Situation Speed
Stellaris test branch 4.4.2 addresses multiple stability issues, fixes UI crashes at low resolutions, and nerfs Forever Cruise situation speed.
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Stellaris 4.4 'Pegasus' and Nomads Expansion Land June 15
Stellaris update 4.4 'Pegasus' arrives alongside the Nomads expansion on June 15, introducing mobile Arkships, Waylines, automated job management tools, and extensive mechanical overhauls.
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Stellaris Hotfix 4.3.7 Restores Mod DLC Checks
Stellaris patch 4.3.7 fixes backward compatibility for mods affected by Utopian Abundance changes. Available now on Steam and GOG, with MS Store following certification.
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Stellaris Patch 4.3.6 Integrates Past DLC and Adds Framerate Controls
Stellaris update 4.3.6 brings Utopia, Synthetic Dawn, and the Humanoids Species Pack directly into the base game, accompanied by rendering overrides and portrait customization tools.
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Stellaris Open Beta 4.3.4 Cetus Update Adjusts Fleet Caps and Weapon Balance
Stellaris Open Beta 4.3.4 'Cetus' introduces fleet MIA caps, disruptor anti-regeneration effects, and economy production boosts. The update also resolves major out-of-sync issues and refines AI budgeting behaviors.
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Stellaris Update 4.3.3 ‘Cetus’ Adds Galaxy Sliders and Fixes Starbase Armor
Stellaris patch 4.3.3 brings advanced galaxy sliders, building efficiency buffs, starbase armor corrections, and planetary automation fixes.
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Stellaris Hotfix 4.3.1 Prevents Incompatible Save Loading
Stellaris hotfix 4.3.1 stops the launcher's Resume button from loading incompatible pre-4.3 saves and restores the Avian portrait for Paradox Account logins. The update also fixes a crash-to-desktop issue related to modifier names.
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Stellaris Base Game Adding Utopia, Synthetic Dawn, and Humanoids Ahead of Price Increase
Paradox Interactive is rolling the Utopia and Synthetic Dawn expansions, plus the Humanoids Species Pack, directly into the Stellaris base game starting May 11, 2026. Alongside this change, the base game price will increase by $10, with the "Infinite Frontiers" e-book being retired.
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Stellaris 4.3.0 'Cetus' Update Overhauls Economy and Naval Capacity
The massive Stellaris 4.3.0 'Cetus' update restructures the galactic economy at a lower power level, increases ship naval capacity costs fivefold, and addresses end-game performance. The patch also introduces immediate population demotions and reworks several ascension paths.
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Stellaris Update 4.2.3 Balances Infernals and Fixes Late-Game Crashes
Stellaris update 4.2.3 is available now, bringing balance adjustments for Infernal empires, crisis path tweaks, and crash fixes. The patch aligns trait and civic availability for Thermophiles and addresses stability issues across platforms.
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Stellaris Update 4.2 Corvus and Infernals Species Pack Patch Notes
Stellaris update 4.2 'Corvus' arrives alongside the Infernals Species Pack on November 25. The update brings extensive balance adjustments, crisis paths, performance optimizations, and bug fixes.
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Stellaris Update 4.1.7 Fixes Cybernetic Ascension and AI Orbitals
Stellaris patch 4.1.7 fixes cybernetic conversion bugs, lowers governor trait power, and forces the AI to build Orbital Rings.
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Stellaris v4.1.7 Open Beta Lands With Modifier Overhaul and AI Tweaks
Stellaris version 4.1.7 enters public testing on Steam with a foundational modifier system rewrite, several cybernetic ascension fixes, and balance adjustments for specific origins. The build carries checksum ad13 and acts as a precursor to upcoming tick-speed optimizations.
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Stellaris Open Beta v4.1.6 Fixes Crashes, Fleet Clogging, and Ringworld Stats
Stellaris open beta v4.1.6 is now live on the test branch with bug fixes, ringworld economy adjustments, and stability improvements.
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Stellaris Patch 4.1.5 Balances Shroud Mechanics and Resolves Out-of-Sync Errors
Stellaris patch 4.1.5 arrives with adjustments to Shroud mechanics, origin rules, and empire civics. The update also tackles multiplayer out-of-sync errors, crash bugs, and automation logic.
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Stellaris Open Beta v4.1.5 Overhauls Psionics, Origins, and Stability
Stellaris open beta version v4.1.5 brings together changes from the 4.1.4 test branch alongside desync fixes, UI updates, and psionic adjustments.
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Stellaris Update 4.1.3 Resolves Save Crashes and Psionic Trait Bugs
Stellaris patch 4.1.3 fixes critical issues with leader traits, planet occupations, and savegame crashes.
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Stellaris Update 4.0.23 Adjusts Ion Cannons and Fixes Job Assignment
Stellaris update 4.0.23 brings power output buffs to Ion Cannons, fixes auto-modding trait scaling, and addresses widespread job assignment bugs across planets.
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Stellaris Update 4.0.23 Beta Targets Crashes and Job Assignment Errors
A new open beta build for Stellaris aims to resolve crashing problems and fix a job assignment error impacting Virtuality and automatic migration. The update is currently available on the test branch ahead of a planned live release.
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Stellaris Update 4.0.22 Release Notes
Stellaris update 4.0.22 delivers major Wilderness empire changes, strategic resource balancing, fleet command limit increases, and extensive bug fixes.
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Stellaris Update 4.0.22 Revamps Wilderness Empires and Fleet Limits
Stellaris patch 4.0.22 overhauls Wilderness origin mechanics, increases fleet command limits, and rebalances strategic resource production. The update prepares the open beta branch for a live release on August 21st.
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Stellaris Wilderness Open Beta Update 4.0.22 Fixes Multiplayer Desyncs
The Stellaris Wilderness Open Beta receives patch 4.0.22, addressing multiplayer desynchronization, economic balance, and AI logic. The update also introduces new research restriction policies.
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Stellaris Wilderness Open Beta Update Patch Notes
Stellaris Wilderness Open Beta update 4.0.22 introduces Wilderness empire quality-of-life adjustments, fleet command limit increases, AI logic overhauls, and bug fixes.
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Stellaris Update 4.0.21 Adjusts Necrophages, Slows Patch Cadence
Stellaris patch 4.0.21 buffs Necrophage growth, fixes event bugs, and improves multiplayer save transfers. Developer Paradox also announced a slower patch cadence moving forward to allow for more thorough internal testing.
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Stellaris Update 4.0.21 Balances Necrophages and Fixes Megastructure Storms
Stellaris patch 4.0.21 stops Storm Aftermath events from disrupting almost-finished megastructures and buffs Necrophage growth mechanics. The update also addresses multiplayer save speeds and colony-breaking bugs.
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Stellaris Hotfix 4.0.20 Targets Persistent Save Game Crashes
Stellaris update 4.0.20 arrives to eliminate save game loading crashes and freezes that accounted for the vast majority of recent player issues. The patch also introduces an optional faster save transfer setting for testing.
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Stellaris Updates 4.0.17 and 4.0.18 Deliver Balance Passes and Stability Fixes
The latest Stellaris updates overhaul Wilderness empires, fix critical Out-of-Sync multiplayer crashes, and adjust Synaptic Lathe mechanics. A rapid hotfix 4.0.18 also reverts recent Fallen Empire building limitation changes.
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Stellaris Update 4.0.15 Reworks Fallen Empires and AI Logic
Paradox Interactive has deployed the Stellaris 4.0.15 patch alongside a 4.0.16 open beta. The update overhauls Fallen Empire building limits, adjusts AI economic priorities, and fixes dozens of bugs ranging from out-of-sync errors to pop growth calculations.
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Stellaris Patch 4.0.11 Overhauls Rogue Servitors and Fixes Multiplayer OOS
Stellaris patch 4.0.11 drops with bug fixes, economic rebalancing for Rogue Servitors, and stability improvements for multiplayer sessions.
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Stellaris Update 4.0.10 Refines UI, Economy, and Automatic Resettlement
Stellaris patch 4.0.10 fixes issues in BioGenesis and version 4.0, introducing major upgrades to automatic resettlement efficiency, pop group merging, and planet UI layouts.
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Stellaris Open Beta 4.0.7 Fixes Multiplayer OOS and Updates Localization
Paradox has launched the 4.0.7 open beta for Stellaris on Steam, featuring a critical multiplayer out-of-sync fix, UI corrections, and balance adjustments. Players can opt in now via the Steam client to test the preliminary build ahead of its official release.
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Stellaris Update 4.0.6 Fixes Stability and Crash Bugs
Stellaris patch 4.0.6 rolls out fixes for multiple crash-to-desktop errors affecting districts, government views, and event choices. The update also resolves issues with the BioGenesis expansion content.
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Stellaris Patch 4.0.5 Overhauls Wilderness Empires and Economy
Stellaris update 4.0.5 brings extensive balance adjustments to Wilderness Empires, fixes planetary automation loops, and updates various civics and origin mechanics. The patch also tackles a long list of out-of-sync errors, crash triggers, and UI inaccuracies.
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Stellaris Update 4.0.4 Reverts Leader Changes and Tweaks Balance
Stellaris patch 4.0.4 adjusts amenities and housing, reverts leader trait progression, fixes various crashes, and optimizes AI performance.
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Stellaris 4.0.3 Hotfix Adjusts Wilderness Empires and Fixes Economy Bugs
The Stellaris 4.0.3 hotfix targets Wilderness empire mechanics, fixes broken building upgrades, and resolves performance issues caused by weaver growth auras. Paradox has also outlined rollback steps for older saves and verification fixes for missing BioGenesis DLC content.
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Stellaris Free 4.0 Phoenix Update Revamps Pops, Trade, and Performance
The free Stellaris 4.0 Phoenix update tackles late-game performance by replacing individual pops with Pop Groups and overhauling the trade system. Reaching players on May 5th, the patch also introduces district specializations, new mammalian portraits, and precursor selection options.
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Stellaris Update 3.99.6 Phoenix Open Beta Overhauls Planet Management
Stellaris update 3.99.6 for the Phoenix Open Beta introduces major planet view changes, adding default building slots and two customizable zones to urban districts. The patch also brings basic functionality for gestalt empires, updates the planet UI, and includes various UI and bug fixes.
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Stellaris 3.99.5 Phoenix Open Beta Update Adds Mandarin Voice and Betharian Zone
The Stellaris 3.99.5 Phoenix Open Beta update introduces the Betharian Zone, a Mandarin voice advisor, and stargazer color variants alongside extensive economy and UI adjustments. Colony stability fixes, automated migration rate increases, and revamped district tooltips highlight the test build.
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Stellaris Update 3.99.4 Phoenix Open Beta Patch Notes
Stellaris version 3.99.4 Phoenix Open Beta fixes job allocation issues, rebalances medical buildings, and addresses AI behavior regarding Zones. The update also tweaks habitat costs, subject integration, and ringworld functionality.
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Stellaris Phoenix Open Beta Update 3.99.3 Overhauls Habitats and Economy
The latest Stellaris open beta brings major updates to habitats, planet management, and job distributions. Habitats are now semi-functional structures tied to system resources, while pop job assignments have been shifted to prevent economic spirals.
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Stellaris 3.99.2 Phoenix Open Beta Adds Industrial Zone and MegaCorp Focus Tasks
The Stellaris 3.99.2 Phoenix Open Beta update introduces an Industrial Zone for mixed alloys and consumer goods, adds new MegaCorp focus tasks, and overhauls underlying pop group logic. Players can test these changes by opting into the beta branch on Steam.
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Stellaris 3.99.0 Phoenix Open Beta Outlines Major 4.0 Systems
Paradox opens the 3.99.0 Phoenix Open Beta for Stellaris, testing foundational 4.0 mechanics like grouped pops, updated economic zones, and the new Empire Timeline. The initial testing build runs without gestalts or custom origins as developers isolate performance and pacing.
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Stellaris Update 3.14.1 Circinus Preliminary Patch Notes
Stellaris version 3.14.1 arrives alongside the Grand Archive Story Pack, bringing space fauna breeding systems, new origins, and extensive balance changes. The update also introduces strict habitat limits for AI empires and fixes numerous event and localization bugs.
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Stellaris Patch 3.13.2 Fixes Industrial Districts and Tooltips
Paradox Interactive has released Stellaris patch 3.13.2 (checksum d465), fixing Gestalt Empire job counts, Cosmic Storm tooltips, and species creation crashes.
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Stellaris Update 3.13.1 Rebalances Cosmic Storms
Stellaris patch 3.13.1 removes early-game Nexus Storms, lowers storm creation costs, and resolves multiple crash-to-desktop errors.
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Stellaris Details 3.13.1 Vela Update and Storm Changes
Stellaris has released preliminary patch notes for the 3.13.1 Vela update, launching next Tuesday. The update removes Nexus storms from the early game pool, adjusts storm creation costs, and fixes various crash issues.
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Stellaris Update 3.13 Vela Brings Cosmic Storms and Colony Reworks
Stellaris patch 3.13 Vela prepares the game for the Cosmic Storms expansion by reworking planetary deposits, penal colonies, and thrall worlds. The update also standardizes war ally travel and includes numerous interface fixes.
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Stellaris Update 3.12.5 Rebalances Nanites and Economy
Paradox Interactive has released Stellaris update 3.12.5 under checksum 9a6f. This patch wraps up the 3.12 release cycle with nanite economic rebalancing, Empire Size adjustments, and numerous bug fixes.
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Stellaris 3.12.5 Andromeda Update Rebalances Empires
Stellaris patch 3.12.5 adjusts Fallen Empire opinion penalties, rebalances job outputs, and resolves multiple crash bugs ahead of its June release.
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Stellaris Patch 3.12.3 Andromeda Out Now with Teasers for Cosmic Storms
Stellaris patch 3.12.3 brings tradition agendas, megastructure dismantling, and sweeping balance updates for synthetic ascensions and civics. Meanwhile, Paradox outlines plans for the 3.13 Vela update, introducing galactic weather systems later this year.
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Stellaris Update 3.12.3 Adds Kilostructure Dismantling and Synthetic Ascension Tweaks
Stellaris update 3.12.3 introduces the ability to dismantle select kilostructures and updates Synthetic Ascension paths. The patch also adjusts civic election terms and refines economy modifiers.
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Stellaris Update 3.12.2 Andromeda Fixes Virtual Pops and Crash Errors
The first official Stellaris post-launch patch for The Machine Age arrives with numerous bug fixes, crash corrections, and mechanical adjustments drawn from the recent open beta.
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Stellaris 3.12.2 Andromeda Open Beta Patch Notes
Stellaris launches the 3.12.2 Andromeda open beta on Steam to test critical crash fixes and stability improvements. The optional test branch resolves virtual pop exploits, ship range calculations, and AI weight calculation errors.
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Stellaris Update 3.12.1 Andromeda Patch Notes
Stellaris update 3.12.1 Andromeda introduces mechanical overhauls for machine empires, new ascension paths, and balance changes alongside The Machine Age expansion. Machines now operate under revised lifespan and habitability systems, opening up restricted origins.
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Stellaris Patch 3.11.3 Eridanus Fixes Crashes, Traits, and Event Loops
Stellaris patch 3.11.3 Eridanus brings the final version of the recent open beta alongside an additional crash fix. The update tackles trait management, event loops, and UI text errors across the galaxy.
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Stellaris Launches 3.11.3 Eridanus Open Beta
Stellaris update 3.11.3 Eridanus is now available as an optional open beta on Steam. It fixes trait removal, refugee timers, and event loops.
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Stellaris Update 3.11.2 Eridanus Patches Domination and Crashes
Paradox Interactive has released Stellaris update 3.11.2 to fix crashes, balance tradition trees, and resolve pre-FTL diplomacy bugs. The patch addresses issues introduced with the Eridanus release.
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Stellaris Update 3.11.1 Eridanus Adjusts Technology Costs and Ship Upkeep
Stellaris patch 3.11.1 Eridanus introduces a difficulty-adjusted technology cost slider, separates tech and tradition sliders, and rolls out sweeping adjustments to ship upkeep and economic civics.
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Stellaris Update 3.11.1 Eridanus Adjusts Technology Costs and Balance
Stellaris patch 3.11.1 Eridanus introduces a technology cost difficulty slider, separates tech and tradition sliders in galaxy setup, and rebalances civic interactions and ship upkeep.
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Stellaris 3.11 Eridanus Update Release Notes
Stellaris update 3.11 Eridanus introduces separated technology and difficulty sliders, leader traits rebalancing, extensive ship upkeep adjustments, and numerous bug fixes.
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Stellaris Update 3.10.4 Pyxis Arrives Alongside Technology Open Beta Details
Stellaris update 3.10.4 "Pyxis" addresses leader traits, AI exploration behavior, and modifier bugs. Additionally, Paradox outlines an upcoming Technology Open Beta running from December through January.
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Stellaris Update 3.10.3 Pyxis Released With Stability Fixes and Beta Preview
Paradox Interactive has released Stellaris update 3.10.3 Pyxis, focusing on stability and bug fixes. The update also previews a holiday open beta targeting research speed power creep and ship cost reductions.
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Stellaris 3.10.3 Pyxis Beta Update Focuses on Stability
The Stellaris 3.10.3 Pyxis open beta update on Steam focuses on stability, addressing Linux startup crashes and federation perk error logging. It also freezes technological progress for pre-FTLs in Federation's End and updates several advisor and ambassador assignments.
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Stellaris Update 3.10.2 Pyxis Fixes Crashes and Adds Outliner Customization
Stellaris patch 3.10.2 Pyxis is now live on all platforms, delivering a fix for a common MacOS memory crash, ship build cost corrections, and full outliner tab customization.
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Stellaris Update 3.10.2 Pyxis Open Beta Adds Outliner Customization and Stability Fixes
Paradox has released the Stellaris 3.10.2 Pyxis Open Beta on Steam, bringing full outliner tab customization and a fix for a widespread MacOS crash. The update also adjusts leader traits, reclasses Nasuz Demetor, and tweaks event triggers across several origins and anomalies.
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Stellaris Update 3.10.1 Pyxis Outliner Hotkeys and Balance Tweaks
Stellaris update 3.10.1 Pyxis brings new outliner hotkeys, leader trait rebalances, and numerous bug fixes. The patch addresses economic exploits and stabilizes empire generation.
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Stellaris Update 3.10.1 Pyxis Beta Brings Outliner Hotkeys and Balance Tweaks
Stellaris version 3.10.1 Pyxis beta launches on Steam with outliner tab hotkeys, leader trait rebalances, and fixes for DLC ownership verification issues.
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Stellaris 3.10.0 Pyxis Update and Astral Planes Expansion Patch Notes
Stellaris version 3.10.0 Pyxis overhauls the leader system with class consolidations and new UI features alongside the Astral Planes expansion. Explore dozens of new branching rifts, mechanics, and balance adjustments.
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Stellaris Update 3.10.0 Pyxis Overhauls Leaders and UI
Stellaris update 3.10.0 Pyxis consolidates the leader system into three main classes, rebalances traditions and civics, and introduces a tabbed outliner.