🛠️ Terraforming Marsのアップデート履歴
開発元がSteamで公開した公式告知（パッチ、新コンテンツ、イベント）を時系列でまとめています。タイトルをクリックすると全文を読めます。
2026年6月
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6/9火📢 お知らせTerraforming 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…
2026年4月
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4/7火📢 お知らせTerraforming 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…
2026年3月
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3/19木📢 お知らせTerraforming 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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3/4水📢 お知らせTerraforming 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…
2026年2月
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2/4水📢 お知らせTerraforming 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…
2026年1月
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1/29木📢 お知らせTerraforming 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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1/15木📢 お知らせPlanets 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…
2025年11月
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11/26水📢 お知らせMars 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 …
出典：Steam公式告知（6～24時間ごとに更新）。タイトルと概要の著作権は各開発元に帰属します。