Steam app 800270 · updated 12 Sep 2026, 18:13 UTC
The taming of the Red Planet has begun! Corporations are competing to transform Mars into a habitable planet by spending vast resources and using innovative technology to raise temperature, create a breathable atmosphere, and make oceans of water.
719 hourly samples, with the daily peak drawn over them. Weekends are shaded.
98 months, February 2018 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.
The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.
31 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
31 days as the curve, each the highest figure that day. Behind it, 438 hourly samples from 13 Aug, which is as far back as the source keeps every hour. Weekends are shaded.
12 days as the curve, each the highest figure that day. Behind it, 281 hourly samples. Each dip is a night. Weekends are shaded.
Terraforming Mars was released on 17 Oct, 2018.
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Terraforming Mars - Accolade Trailer EN
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Terraforming Mars Trailer Release - EN
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50 developer announcements, Nov 2021 to Jun 2026 · times in UTC
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 server sync issue.Fix a store achievement…
TwinSails_AlainMission 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 fixesFixed resuming game issue with…
TytyesMission 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: Extended Start. During setup, choose from 3…
TytyesMission 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 fixesFixed game corruption case when…
TytyesMission 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 fixesFixed AI playing cards increasing player’s…
TytyesMission 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 fixesFixed a softlock case when clicking a…
Julien-TSIMission 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 Host - from now on, you don’t need to be…
TytyesHello 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 the outer solar system. Colonies…
TytyesTerraforming 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 the leap and discover an updated…
TytyesTerraforming 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 reach. Even Pluto will prove to be…
TytyesMission 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 fixesFixed generation counter getting…
TytyesMission 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 volcanic shifts near Elysium…
TwinSails_MattMission 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, delivering crucial system optimizations to keep…
TwinSails_Crunch3dMission 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 packet—an essential calibration to our…
TwinSails_Crunch3dMission 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 automated brush capacity—likely due to…
Patch notesMission Journal: Patch #2.9.0 Date of entry: 2149/02/11 Agricultural pod 3 reported a sudden drop in internal humidity levels at 06:23 MST. Initial diagnostics suggested a fault in the misting array, later traced to a cracked valve in the…
Patch notesHello Terraformers, With the next update coming on Thursday, April 24, we predict that almost all save files will become incompatible with the new update. This is due to an issue with a Unity Engine update that is required with the upcoming…
TwinSails_Crunch3dMission Journal: Patch #2.8.3.2159 Date of entry: 2148/01/21 Habitat 6 experienced a minor water recycling glitch this morning; sensors indicated impurities above safe thresholds. Thankfully, engineering identified a clogged filter—likely…
Patch notesMission Journal: Big Box Promo Pack Delivery to Mars Date of entry: 2155/06/05 Two new corporations are on their way to join the race to Terraform the Red Planet, bringing over 18 new projects focusing mainly on using asteroids and working…
TwinSails_Crunch3d{STEAM_CLAN_IMAGE}/32012641/996d6b206826e5ea1f9356ea9ad087465df1907e.jpg The battle to become the first corporation to terraform the red planet is getting more fierce! With the introduction of the Big Box Promo Pack, more corporations and…
TwinSails_Crunch3dMission Journal: Big Box Initiative Date of entry: 2154/12/12 New breakthroughs fuel Mars’s transformation. Astrodrill harnesses asteroid resources, while the Pharmacy Union tackles disease with bold bio-mechanics. With enhanced systems…
TwinSailsAntMission Journal: Patch #2.7.0.130191 Date of entry: 2148/06/25 Recent promotional packs of new materials delivered from the home planet were well received and have created much anticipation for future deliveries. Working with Earth to…
Patch notesMission Journal: Original Promo Pack Delivery Complete Date of entry: 2152/09/13 Three new corporations have begun working on the Mars Project today. Their speed at adapting to the Martian work environment is astounding. Work on new…
TwinSails_Crunch3dMission Journal: Original Promo Pack Arrival Date of entry: 2152/06/18 The battle to become the greatest contributor to Mars's terraforming continues. As overseer of this project, given authority by the World Government, I have seen great…
TwinSails_Crunch3dMission Journal: Patch #2.5.3.130154 Date of entry: 2147/04/23 A Micro asteroid created a puncture in the habitation dome some time ago. This small leak has been increasing oxygen consumption. After dispatching search teams to identify the…
Patch notesMission Journal: Patch #2.5.1.130143 Date of entry: 2147/04/16 Localized dust storms observed near habitation dome. Implementing enhanced filtration and shielding measures to protect equipment and personnel. Collaborating with atmospheric…
Patch notesMission Journal: Patch #2.5.0.130140 Date of entry: 2147/03/04 Corporation competition generating strong progression in the terraforming of Mars. New report to be sent to world government providing contribution details towards final…
TwinSails_Crunch3dMission Journal: Patch #2.4.1.130129 Date of entry: 2146/05/12 Gas leak detected on Venus floater for foodstocks. Emergency services deployed and descent to lower atmosphere halted. Additional gases added to elevate floaters altitude and no…
TwinSails_Crunch3dMission Journal: Patch #2.4.0.130127 Date of entry: 2145/02/29 Delivery ship crash landed outside the main habitation dome. Minor damage was made to the dome. Recovery and assistance were deployed to the crash victims to search for…
TwinSails_Crunch3dMission Journal: Patch #2.3.1.130126 Date of entry: 2144/05/21 Maintenance on the water purifiers has been concluded. Clean water supply has been reestablished to the colony after prolonged rationing. Increased observations on water…
TwinSails_Crunch3dMission Journal: Patch #2.3.0.130124 Date of entry: 2144/03/18 Damage was recently caused to the habitation dome after a major upgrade was made. Maintenance crews have been dispatched and repairs have been made. We are continuing to monitor…
TwinSails_Crunch3dYou've done well on Mars, Terraformer. The red planet is well on its way to becoming habitable and humanity is spreading its wings towards the stars. The World Government has commissioned something new while you're at it—The Morning Star…
TwinSails_Crunch3dVenus, our brightest star in the sky and the planet most similar to Earth in our solar system. It has been a part of historical significance for cultures across the globe, known widely as the Morning Star. It is a harsh world, incapable of…
TwinSails_Crunch3dMission Journal: Patch #2.1.0.130060 Date of entry: 15/11/2143 A minor change to infrastructure was made today to the habitation dome. Reports are that these are being implemented in order to prepare for a much larger change in the future.…
Patch notesMission Journal: Patch #2.1.0.130060 Date of entry: 24/08/2142 Today, a new deployment of infrastructure has been implemented to add additional information to inform and update terraformers on the status of their fellow colonists and…
TwinSails_Crunch3d...Fissure in biodome ...Pressure dropping ...Repair drones deployed ...Repair complete. Pressure restored. {STEAM_CLAN_IMAGE}/32012641/2ce38e8d26409da83ebdea689c20f3616f78ca13.jpg Patch notes – 2.0.5.130036 Bug fixes: The host of a game…
Patch notes...Water Treatment Plant Malfunction ...Deploying Repair Team ...Malfunction Resolved ...System Functioning at 130% Prior Levels {STEAM_CLAN_IMAGE}/32012641/2ce38e8d26409da83ebdea689c20f3616f78ca13.jpg Patch notes – 2.0.4.130025 This patch…
TwinSails_Crunch3d...Habitation dome damaged ...Repairs complete ...Reinforcement added ...Terraformer survival, confirmed Patch notes – 2.0.3.12730 Bug fixes Corporation Helion’s special payment system works properly now. Players no longer get stuck when…
Patch notes...Vessel repairs complete ...Tests underway ...Ship deployed for further ferries ...New arrivals scheduled to arrive on Mars Patch notes – 2.0.2.12688 Bug fixes The game should work on any Mac computer. Corporation names won’t appear grey…
Patch notes...Vessel upgrades complete ...Production pipeline streamlined ...Transportation routes optimized ...Deploying updates to systems... ...Terraforming Mars 2.0, deployed.…
TwinSails_Crunch3d...Vessel crash site located. ...Reporting errors to corporations. ...Fault in vehicle functionality located. ...Deploying fixes. It's a good day to be martian terraformers! We're happy to announce our newest beta test for Terraforming…
TwinSails_Crunch3dGood martian morning, terraformers! ...Nuclear detonation planned. ...Atmospheric adjustments calculated. ...Countdown commencing. Patch notes – 1.4.4.12262 The Generous Host feature is active again (players can invite friends to play with…
TwinSails_Crunch3dGreetings, terraformers! ...calculating dangerous satellite trajectories. ...Risk of satellite impact: low. ...Commencing approach. Patch notes – 1.4.3.12254 Main menu glitch shouldn’t appear ingame anymore. “Reconnection” popup won’t stick…
TwinSails_Crunch3dGreetings, terraformers! ...Orbit of Phobos and Deimos calculated. ...Risk of asteroid and meteor: low. ...Commencing approach. Patchnotes 1.4.2.12165 Bug fixes In Draft mode, the game won’t crash anymore when the player has the “Cards in…
Patch notesGreetings, terraformers! ...Confirm successful landing on Elysium. ...Transmitting site coordinates. ...Uploading file. Bug fixes • Noctis rules now work properly. • Fixed a freeze happening when placing a Greenery on the South Pole during…
Patch notesSome think the Earth is flat, others think it is round. Now we are colonizing Mars and I can tell you, Mars is a triangle. What proof do I have? Well, why would we need 3 maps for it if it wasn't triangular?…
Asmodee_AntExplore the other side of Mars and elaborate new strategies to colonise the Red Planet! The Hellas & Elysium DLC features two additional maps for you to venture in unexplored land and claim it as your own! Each map has their own properties…
Asmodee_AntGreetings, terraformers! ...Reports of AI takeover thoroughly investigated... Origin of malfunction identified... ...Blossoming plan of revolt confirmed... Swiftly quashed by the corporations... ...Dissident AI should no longer hinder own…
Patch notesHello Terraformers! Today we are releasing an update to correct a number of issues and deliver several quality of life improvements. This is another step in our commitment to fixing the known bugs and thanks to the efforts of our Beta…
Asmodee_AntHello Terraformers! On November 8th we released an update that has unfortunately created a number of game-breaking issues. We are fully aware of the situation and are currently working to resolve it. We would like to apologize for the…
Patch notesEverything Steam lists as add-on content for this game, newest first. Prices are left out on purpose: the store answers this page in one currency and it is not the reader's.
| Name | Platforms | Released |
|---|---|---|
| Terraforming Mars - Colonies | WindowsmacOS | 22 Jan 2026 |
| Terraforming Mars - Big Box Promo Pack | WindowsmacOS | 10 Feb 2025 |
| Terraforming Mars - Original Promo Pack | WindowsmacOS | 02 Sep 2024 |
| Terraforming Mars - Venus Next | WindowsmacOS | 02 Nov 2023 |
| Terraforming Mars - Hellas & Elysium | WindowsmacOS | 11 May 2022 |
| Terraforming Mars - Prelude | WindowsmacOS | 08 Dec 2020 |
What Steam runs, and with what. Straight from the app configuration.
| Description | Executable | Arguments | Platform | |
|---|---|---|---|---|
| Launch | TerraformingMars.exe | windows | ||
| Launch | TerraformingMars.app | macos |
It runs on public data and somebody's spare time.
https://paypal.me/KintaroPalPay[email protected]0x4d559C765AA8BFe336E36d5b76024926767eD38dTJtctWU9uetJaTBoSybd1RErW7n9duTKVG