- Simulation
- Strategy
Game
Sins of a Solar Empire II
Battle for galactic dominance in this real-time 4X strategy game with unrivaled scale! You’ll explore, expand, exploit, and exterminate through military force, diplomacy, trade, culture, influence, and other underhanded tactics.
Battle for galactic dominance in this real-time 4X strategy game with unrivaled scale! You’ll explore, expand, exploit, and exterminate through military force, diplomacy, trade, culture, influence, and other underhanded tactics.
About Sins of a Solar Empire II
- Released
- October 2022
- Developer
- Ironclad Games
- Publisher
- Stardock Entertainment
- Engine
- Iron Engine
- 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 AnnouncementsSins of a Solar Empire II: Harbinger Arrives September 3rd, 2026The Fourth Faction for Sins of a Solar Empire II Releasing September 3rd, 2026After 20 years of intrigue, the great enemy of the Vasari is revealed, ushering in new gameplay mechanics, ships, structures and more. Wishlist the Harbinger ExpansionThe Vasari have spent generations running, and they have warned anyone who would listen about what was behind them. On September 3, 2026, their time run...
- Community AnnouncementsChange Notes for July 10, 2026 (v1.61.4)A small update today to add a quality-of-life improvement, balance adjustments for missiles and point-defense and other items.Added visual range circles for defense structures during placement.Fixed bug that prevented missiles from retargeting (still requires requisite tech unlock).TECGarda Flak Frigate: increased each turret’s pitch/yaw firing tolerance by 150% to better track enemy missiles/s...
- Community AnnouncementsVideo Dev Journal: Vasari Balance AdjustmentIn this video developer journal BATTLEMODE explains the reasoning and method behind the recent balance adjustment to the Vasari, to tone them down a little and bring them back into line with the Advent and TEC.
- Community AnnouncementsUpdate Notes for June 19, 2026 (v1.61.3)More than a hotfix, but we’re calling it one anyway! NEW - Texture Quality SettingWe’ve added a new setting to Settings → Graphics → Rendering Device to adjust the texture quality of units in the game. Adjust this if you’re on a laptop or on Steam Deck, as those systems use Shared Memory for graphics and will crash if you run out of it. This is the #1 cause of crashes for players on these syste...
- Community Announcementsv1.61 'Prelude' Update Is LiveSins of a Solar Empire II v1.61 is LiveView ChangelogWe've switched gears for our June update. The ARES AI overhaul still needs more time in the oven, so rather than rush it, we're holding it in the opt-in build and shipping a smaller, focused v1.61 in the meantime.This one is about making the AI a sharper opponent. AI players now survey the planets they own based on difficulty, and we've adjus...
- Community AnnouncementsVideo Blog: Sovereign Echo on Defenses & The Pirate GalleonIn this interview, Sins of a Solar Empire II's game designer, Conor "Sovereign Echo" Harris, joins BATTLEMODE to discuss the role of static defensive structures in Sins of a Solar Empire II, and his work to clarify and improve defensive play by adding in new abilities for each. He also shares information on the Pirates and the new Pirate Galleon added to the game a few months back.
- Mods indexed
- 509
- Versions
- 0
- Newest tracked
- none yet
- Most disruptive update
- No breakage data for this game
Most downloaded
Measured from the source's own counts, summed across every release.
- Galactic Empire Plus [live]Adds the Galactic Empire faction and ships. New balance updates to bring the Empire into line with vanilla balance. Thanks to Tracyn057 for all the hard work making the base mod. Requires MEM loaded at the bottom to function.185.6k downloads
- M.E.M FrameworkMultiverse Exansion Mod Framework mod for Sins of a Solar Empire II151.5k downloads
- Stargate Races 2Adds playable factions from the Stargate setting to the game. Currently includes only the Ancients, Asgard, Goa'uld & Wraith. **Requires the M.E.M Framework mod be present and loaded as well**133.8k downloads
- RRR 5.7.2B--Jul 12 2026-- Total conversion tech mod with heavily edited factions. Edited version of Elite521's mod included. Submods for customization. {color:warning_value}NOT COMPATIBLE WITH OTHER MODS.{color:/}131.0k downloads
- Star Trek: Armada IV - CoreThe Core Star Trek: Armada IV pack containing the United Federation of Planets. Please note this is in a Pre-Alpha Preview state.81.4k downloads
- Galactic Empire with Factions UnitedThis combines the Galactic Empire and the Factions United, along with some other mods, with some additional changes.72.0k downloads
- SzepysChokepointChokepoint maps collection (from 1v1 to 5v5)69.2k downloads
- More Starbase levelsGives Starbases the ability to level up like Capital ships. This is the version with no level limit!44.4k downloads
- More Capital ship and Titan levelsAll Capital ships and Titans get the maximum amount of levels sins2 allows. Scaling past level 10 is currently linear and based on the stat changes from level 9 to 10.39.5k downloads
- Unique Ships RemasteredAdds unique capital ships and titans to the game (updated to v1.5)27.2k downloads
- Atlas Maps 1.2A mod that add multiples maps, mostly chokepoint like. Its my first mod sobeen working on some improvement, fixes and new maps. Made by me. NEW : Added new planet type to the maps.27.1k downloads
- Sins of the UnionBringing the Factions from The Orville TV Show to Sins2. Featuring iconic ships, races, custom dialogue, artwork and more!27.0k downloads
- Laser Beam ModReplaces the visuals of all Advent laser weapons with short-burst beams.26.2k downloads
- Enigma's ChokepointsA collection of maps playable from 2-10 players in teams or FFA that feature a small group of planets by each persons spawn and 1-2 ways out that leads to the rest of the players.22.8k downloads
- crolo modsship artifact purchasable from minor factions, capital ship items: 8, planet slots: +1, military supply: 5k-6k, alt faction titan buildable, titan limit: 3, starbase limit: x2, , extractor cost: 0, trade port cost: 1, viturak phase gate limit: 9, etc21.9k downloads
- Star Trek: Armada IV - CardassiansThe Star Trek: Armada IV pack containing the Cardassian Union. Please note this is in a Pre-Alpha Preview state.21.0k downloads
- Advent Exiles (RPG Faction)Play as a single ship without managing planets! This mod adds a new faction, the Advent Exiles: start with a weak Titan in a dangerous neighborhood, farm credits and experience, upgrade your ship, and become unstoppable.21.0k downloads
- Bigger TEC Bullet EffectsGraphical mod - Makes the TEC bullet/gun graphics larger and more visible. Especially pd and gauss cannon projectiles are more visible now. Try it out and see the difference. Also check out my "Bigger Advent Bolt Effects"20.2k downloads
- Starbase levelsGives Starbases the ability to level up like Capital ships.19.9k downloads
- Stargate Races 2 Fan Rebalance Submod** "Needs to be Fixed** This mod is a Submod that is rebalancing the factions to work with other mods specifically; The Galactic Empire Plus Live. **It requires you to have the main Stargate Races 2 mod**18.9k downloads
- Elite521's Additions and Fixes v1.33Collection of bug fixes, changes, and additions made to make the game more fun without completely breaking it. Includes new minor factions, game mechanics, maps and more. Restart game after applying for full effects. See Mod.io page for full details.18.6k downloads
- Alpha Galaxy (10 player)A gigantic map of 603 planets playable in FFA or teams. This map is meant as a more strategic and long game design rather than quick and tactical.16.9k downloads
- Babylon 5 Acts of Sacrifice: Earth Alliance Moduleadds the Earth Alliance faction to the game this is NOT a total conversion special thanks to Badhaircut5, Darvroth , GenralHavoc, Darkyuri and Bcelestia16.5k downloads
- Star Trek: InquisitionTake command of Starfleet, defend the United Federation of planets and fight off enemies with the most advanced technology the Federation can offer.14.7k downloads
Browse all 509 Sins of a Solar Empire II mods Sortable by downloads, rating and date.
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Why Sins of a Solar Empire II 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 Sins of a Solar Empire II 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.