Galactic Civilizations IV v3.31 Now Available

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Galactic Civilizations IV v3.31 Now Available

The v3.31 update for Galactic Civilizations IV is available now on Steam, Epic, and galciv4.com. This is a maintenance release focused on stability, balance, and quality-of-life fixes from community reports.

Get GalCiv IV  |  Changelog Below

Stability

Several crashes are fixed, including ones that could happen during startup, in late-game enemy turns, when closing the Ship Designer, and during turn rollover or autosave around the shipyard.

 

Ship Balance

Ship hull mass capacities have been raised across every hull size. Alongside that, the AI no longer designs ships that go into battle without weapons, so opponents field fleets that actually fight back.

 

Economy & Planets

Pollution now scales more predictably on high-level worlds, so runaway pollution is no longer a problem. Mining starbases behave correctly when built near a contested resource, and a few planetary improvements have been tuned.

 

Diplomacy

Ceasefire negotiations carry more weight now, both when you accept one and when you pay a rival for it.

 

Console Hotkeys

The debug console has its own hotkeys that no longer overlap with the base game, with dedicated keys for teleporting, cloning, resetting moves, and deleting a selected object.

 

Localization

The new planet and resource context windows and the Adaptive AI settings are now translated in all supported languages.

 

Full changelog below. Galactic Civilizations IV v3.31 is available now on Steam, Epic Games Store, and galciv4.com.

Full Changelog

Hello everyone! We have a patch ready for you today focused on game balance updates, improved hotkeys, and enhanced overall stability.
Read below for details!

June 18th, 2026 Change Log

Gameplay

  • Fixed an issue where if a non-mining Starbase was built near a resource first and a player tries to build a second mining Starbase , the second Starbase now correctly mines the resource

  • Reworked the Sanctuary Lattice Module so pollution reduction now applies as a direct area-effect stat instead of a triggered modifier, which should apply more reliably, and the icon has also been updated

  • Increased Ceasefire credit exchange from 200 to 500 when accepting and increased the penalty from 400 to 500 when paid to a rival, so ceasefire deals now carry more weight in negotiations

Ship Hull Rebalance

  • Tiny Hull: Mass capacity increased from 6 → 7 (fixes AI building bombers with no weapons)

  • Small Hull: Mass capacity increased from 18 → 20

  • Medium Hull: Mass capacity increased from 36 → 40

  • Large Hull: Mass capacity increased from 80 → 150

  • Huge Hull: Mass capacity increased from 200 → 300

Improvements

  • Industrial Center: Pollution per level now scales as a flat value instead of a multiplier (prevents runaway pollution on high-level worlds)

  • Planetary Harvester (Synthetic): Pollution per level changed from multiplier to flat scaling

  • Terran Grand Arts Center: Approval per level increased from 0.01 → 0.02

Hotkeys

  • Resolved base game and console hotkey usage overlap. New console hotkeys are

    • CTRL + F1 - teleports the selected object to the cursor

    • CTRL + F2 - clones the object

    • CTRL + F3 - resets moves

    • CTRL + F4 - deletes the object

Localization

  • Added in translations in all supported languages for the new planet and resource context windows and adaptive AI settings

Map Generation

  • Rebalanced map setup values across all density presets

Stability

  • Resolved a crash for late game enemy ship turns

  • Resolved a crash when closing the Ship Designer

  • Fixed a crash that could occur during game startup

  • Fixed a crash that could occur during turn rollover or autosave while in or exiting the shipyard

Text

  • Removed duplicate text for Drengin messages

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