Sins of a Solar Empire II
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Steam
🛠️ Sins of a Solar Empire II update history
Official announcements the developer posts on Steam—patches, new content, and events—sorted by date. Click a title to read the full post.
Latest update · Oct 7
🛠️ Update Note for October 6, 2026
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August 2026
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8/28Fri✨ New contentRelease Livestream: Harbinger Expansion for Sins of a Solar Empire II
Join us on Sept 3 for a release day livestream on the new expansion for Sins of a Solar Empire II, Harbinger!The team will also dive into the new features brought to the game in the free v2.0 update.📅…
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8/21Fri✨ New contentReddit AMA on the Fourth Faction Expansion, Harbinger
Join us on August 27th for a Reddit AMA on the upcoming expansion for Sins of a Solar Empire II, HarbingerJoin the SubredditTune into r/SinsofaSolarEmpire for an exclusive Reddit AMA on the new expans…
Source: official Steam announcements (updated every 6–24 hours). Titles and summaries are copyright of the original developers.