Terraforming Mars
🛠️ Terraforming Mars 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.
June 2026
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6/9Tue📢 AnnouncementTerraforming Mars 2.11.6.3459/886
Mission Journal: Patch #2.11.6.3459/886Date of entry: 2182/11/028 - Communication minimal - Readings are within acceptable range PatchnoteFix of an issue with DLC unlock via product keys.Fix of a serv…
April 2026
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4/7Tue📢 AnnouncementTerraforming Mars 2.11.6.3444/884
Mission Journal: Patch #2.11.6.3444/884Date of entry: 2182/08/014 - Conditions are improving - Oxygen reached optimal level - Life finds a way Feature improvementsSteam Deck full compatibility.Bug fix…
March 2026
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3/19Thu📢 AnnouncementTerraforming Mars 2.11.5.3420/880
Mission Journal: Patch #2.11.5.3420/880Date of entry: 2182/07/022 - Atmosphere and temperature stabilized at 80% - We're still monitoring. Feature improvementsNew Solo Challenge optional rule: Extende…
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3/4Wed📢 AnnouncementTerraforming Mars 2.11.4.3385/879
Mission Journal: Patch #2.11.4.3385/879Date of entry: 2182/03/018 - Surges detected in the secondary core of the gravity generator. Engineer team was quickly on site and resolved the situation. Bug fi…
February 2026
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2/4Wed📢 AnnouncementTerraforming Mars 2.11.2.3305/870
Mission Journal: Patch #2.11.2.3305/870Date of entry: 2181/04/16 From the red surface of Mars, our engineers have stabilized the core systems. Some anomalies remain, but the mission continues. Bug fix…
January 2026
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1/29Thu📢 AnnouncementTerraforming Mars 2.11.1.3281/869
Mission Journal: Patch #2.11.1.3281Date of entry: 2181/04/12 Atmospheric readings are stabilizing. Spike in productivity and terraforming have been registered.Feature extension!Generalized Generous Ho…
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1/15Thu📢 AnnouncementPlanets in sight, get ready to expand our Colonies
Terraforming Mars: new DLC Colonies is coming on January 22ndTerraforming Mars' latest DLC is coming on January 22nd at 7PM CET, save the date and have a look at its very brand new content. Or take th…
November 2025
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11/26Wed📢 AnnouncementMars is not enough, let's expand our Colonies
Terraforming Mars: new DLC Colonies is coming soonThe outer solar system is the new frontier! Colonies are beginning to flourish on the moons of Saturn. The clouds of Jupiter are no longer beyond our …
Source: official Steam announcements (updated every 6–24 hours). Titles and summaries are copyright of the original developers.