- Simulation
- Strategy
Game
Galactic Civilizations IV
You are the leader of a space-faring civilization at the dawn of the 24th century whose choices for domination are endless: planetary conquest, cultural domination, political alliances, technological supremacy. Your mission is to spread your civilization across the known universe.
Take command of a civilization that has just achieved faster-than-light travel in Galactic Civilizations IV, the newest entry in the award-winning space 4X strategy game series. Explore the galaxy, colonize worlds, shape cultures, make alliances, fight wars and pioneer new technologies.
About Galactic Civilizations IV
- Released
- October 2023
- Developer
- Stardock Entertainment
- Platforms
- PC (Microsoft Windows)
Where to get it
Release, studio and platform data from IGDB. Store links go to the sellers, not to us. We do not sell games and we do not host files.
Browse everything
Sorted, filterable and paged. Every link goes to the author’s own download.
From the developers
Official announcements, newest first. Posted on Steam.
- Community Announcementsv4.2 Update Now AvailableThe v4.2 update for Galactic Civilizations IV is available now on Steam, Epic, and galciv4.com. The big change is a round of multiplayer fixes that address several desyncs, an end-of-turn crash, and automated colonies paying for capital and terraforming improvements once per player. On the engine side, we've fixed two common crashes, one with screens that contain sliders and one with Tech Navig...
- Community AnnouncementsAutumn Sale: Up to 75% off Galactic Civilizations titlesUp to 75% off Galactic Civilizations titles during the 2026 Autumn SaleSee all DealsNewly Released:Galactic Civilizations IV deals:Galactic Civilizations III deals:Other Galactic Civilizations deals:See all Deals
- Community Announcementsv4.1.1 Update Now AvailableVersion 4.1.1 is now available. This is a focused follow-up to 4.1 aimed at late-game performance. The most noticeable change is reduced lag when ending a turn in a large, late-game empire. We have also fixed a handful of crashes and made it harder for rivals to culture-flip your planets.EngineFixed late-game lag ending a turn due to stat calculations when colonies changing hands.Fixed late-gam...
- Community AnnouncementsDev Journal #123: The Galactic Roadmap - Fall 2026 EditionWe just finished version 4.1 which itself was a pretty big update with custom maps now working in multiplayer, steam workshop support for custom maps and lots of balance updates. So what's next? I'll divide this between the free updates and next DLC, Galactic Civilizations IV: Ascension The free updates, continuing to improve the user experience, performance, balance, and help make the existing...
- Community AnnouncementsPublisher Sale: Up to 75% off Galactic Civilizations titlesUp to 75% off Galactic Civilizations titles during the 2026 Publisher SaleView Entire SaleNewly Released:Galactic Civilizations IV deals:Galactic Civilizations III deals:Other Galactic Civilizations deals:View Entire Sale
- Community Announcementsv4.1 Update Now AvailableGalactic Civilizations IV v4.1 Now AvailableThe v4.1 update for Galactic Civilizations IV is available now on Steam, Epic, and galciv4.com. The big change is that custom maps now support the Steam Workshop and multiplayer. On the engine side, we've improved stability, fixed a number of crashes and multiplayer desyncs, and sped up AI turns. On the game side, there is a large pass of UI polish an...
- Mods indexed
- 1.7k
- Versions
- 0
- Newest tracked
- none yet
- Most disruptive update
- No breakage data for this game
of 8.2k on Steam Workshop
Most downloaded
Measured from the source's own counts, summed across every release.
- Imperium of ManThe Imperium of Man: A vast galactic empire born from conquest and tenacity, governed by the divine will of the God Emperor of Mankind. Uniting trillions across the cosmos, it stands as humanity's bulwark against alien perils and the insidious forces of Chaos. 20 new citizen portraits3.9k downloads
- Adeptus MechanicusThe Adeptus Mechanicus is an Army of scientists, engineers, and custodians of Emperium of Mankind's technology and knowledge. They perfect the human form by purging the weaknesses of the flesh and replacing with it cold metal. The custom designs in this civ is a combination of ships created by Vo...3.6k downloads
- Abyssal FelinesCosmic Felines, a galactic faction driven by profit and war, navigate the vast universe as conquers of rare resources, exploiting their Promethion-born abilities to forge their own destiny in a vast void. Known to Ambush their prey to dismantle their ships and bodies for resources. Images Created...2.9k downloads
- Tie FighterShort range space superiority fighter equipped with a beam weapon.2.7k downloads
- Eternal TemptressesEternal Temptresses: Alluring, enigmatic beings seeking dominance. Seductive in appearance, lethal in ambition. Beware their allure, for it conceals a fierce and unyielding drive for power.2.3k downloads
- Noxen BloodlineThe Noxen Bloodline, an ancient and enigmatic faction, exalts in their vampiric heritage. With nocturnal prowess, they weave dark magic and embrace traditionalism, seeking dominance over the galaxy.2.3k downloads
- NecronsThe necrons are a mysterious xenos species of humanoid, robotic skeletal warriors that have lain dormant in their stasis-tombs for more than 60 million Terran years, though they have begun to awaken at last. They are the soulless creations and former servants to the ancient C'tan, the terrible st...2.0k downloads
- Sovereign ClassSlightly updated version2.0k downloads
- Constitution ClassRefitted the refit with some new ship parts2.0k downloads
- Resurgent EmpireGrand Admiral Thrawn was sent to a distant galaxy with no possibility of return, but he intends to build a New Empire with his contingent. Admiral Thrawn is a fine tactician who bases his strategy on the production and improvement of his troops.1.9k downloads
- Tie AdvancedShort range space superiority fighter equipped with a beam weapon.1.9k downloads
- Stellar ForgeStellar Forge, a formidable faction in the galactic race, embodies the resilience and craftsmanship of space dwarves, forging their destiny with unwavering loyalty and imposing totalitarian rule.1.9k downloads
- The Order of the Free Suns====== INCLUDES 29 CITIZEN PORTRAITS ====== The Order of the Free Suns rejects tyranny. They fight not just for territory, but for the ideals their beloved Old Republic once championed – democracy, justice, and the right of self-determination for all star systems. They liberate oppressed worlds,...1.8k downloads
- Cthulhu Cabal---------> Includes 42 citizen portraits <--------- The Cthulhu Cabal is a formidable and evil race of slavers, emerging from the darkest corners of the cosmos. They are ancient, having existed before the stars sang their first songs, and their knowledge of the universe is both vast and terrifyin...1.8k downloads
- Defiant Class1.8k downloads
- Tie Bomber1.8k downloads
- Federation StarbaseThere is huge hull version here which can be saved as a starbase should this not work1.8k downloads
- Excelsior ClassUpdated version1.6k downloads
- Celestial UnityCelestial Unity, known as the Druun Holy Empire, is a formidable faction of advanced synthetic beings driven by a divine purpose. They seek harmony through peaceful expansion and relentless technological proliferation.1.6k downloads
- Neo Constitution Class1.6k downloads
- Celestial Dragon EmpireThe ancient Celestial Dragon Empire of Melnibone, commands majestic dragon ships and wields dark powers through unholy alliances with demons. Their age-old dominion spans millennia, unyielding to time's grasp.1.6k downloads
- Adeptus Mechanicus-Supernova StyAdeptus Mechanicus Supernova Style-Warhammer 40k. Contains ships designed by Volundz and Navinor, and I created the rest. The result is a complete Warhammer 40k usable ship set of Space Marine, Mechanicus, and Imperial ships.1.6k downloads
- Stargate Command StyleStargate Command Style1.5k downloads
- Eldar DominionThe Eldar Dominion, known as Warrior Elvs, are a fierce and ancient race with advanced technology, mystical powers, and a deep connection to the cosmos.1.5k downloads
Browse all 1.7k Galactic Civilizations IV mods Sortable by downloads, rating and date.
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Why Galactic Civilizations IV mods break
A mod is compiled against one version of a game. When the game updates, anything that reached into the parts that moved stops working, and it usually stops working silently rather than with a message that explains itself.
That is what the table above counts. It is not a guess: each row is a mod the community has reported as broken by that specific release. The number is a fair measure of how disruptive an update was, and it is the reason people delay updating a game they have modded heavily.
Common questions
Does IndexGG host Galactic Civilizations IV mods?
No, and it never will. Every download link points at the author's own page on Nexus, GitHub, CurseForge or wherever they published it. We index the ecosystem; the files stay with the people who made them.
Where does the compatibility data come from?
From the communities that maintain it in the open, not from guesswork. Each claim carries how it is known, so a reported breakage is never presented as though the author said it.
Why is a mod listed as broken when it works for me?
Compatibility depends on your exact game version and the rest of your load order. A mod marked as broken in one release may work fine on an older one, which is exactly why the version is recorded next to the claim rather than a bare yes or no.