🛠️ 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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2/17火🛠️ パッチ / アップデート v2.11.3.3323Terraforming Mars 2.11.3.3323
Mission Journal: Patch #2.11.3.3323Date of entry: 2182/01/04 Our engineers are working around the clock. Substantial improvements and stabilization of the atmosphere are their priorities. Bug fixesFix…
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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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1/22木🎉 イベントColonies is officially out and it's on sale for the Publisher Week
Hello terraformers, we're happy to celebrate the launch of our latest DLC "Colonies". This new, major DLC significantly enhances the core experience by taking players beyond the red planet and into th…
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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 …
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11/12水🛠️ パッチ / アップデート v2.10.3.3080Terraforming Mars 2.10.3.3080 - Patch Notes
Mission Journal: Patch #2.10.3.3080 Date of entry: 2153/02/21 Atmospheric readings are rising. Toxic elements are still present, caution remains advised.Patch Notes — Terraforming Mars 2.10.3.3080 Bug…
2025年10月
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10/23木🛠️ パッチ / アップデート v2.10.2.2997Terraforming Mars 2.10.2.2997 - Patch Notes
Mission Journal: Patch #2.10.2.2997-884 Date of entry: 2152/06/12 Atmospheric density in equatorial sectors shows steady gains toward habitability. Minor CO₂ conversion drops detected—linked to recent…
2025年9月
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9/3水🛠️ パッチ / アップデート v2.10.1.2779Terraforming Mars 2.10.1.2779 - Patch Notes
Mission Journal: Patch #2.10.1.2779 Date of entry: 2151/01/28 Stability across the colony continues, though new anomalies test our resilience. Command has dispatched the latest update packet, deliveri…
2025年7月
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7/21月🛠️ パッチ / アップデート v2.10.0.2634Terraforming Mars 2.10.0.2634 - Patch Notes
Mission Journal: Patch #2.10.0.2634 Date of entry: 2150/10/08 Terraforming progress remains steady, but unexpected variables continue to surface. Fortunately, Command has just issued a new update pack…
2025年4月
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4/30水🛠️ パッチ / アップデート v2.9.1.2284Terraforming Mars 2.9.1.2284 - Patch Notes
Mission Journal: Patch #2.9.1.2284 Date of entry: 2149/04/18 Power Node Delta triggered a low-output alert at 14:17 MST. Investigation revealed dust accumulation on the southern solar array beyond aut…
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