How many people are playing Terraforming Mars right now?

278 people are playing Terraforming Mars on Steam right now, making it the 978th most played game on Steam. In the last 24 hours it peaked at 605 players. The number updates every few minutes.

What is Terraforming Mars's all-time peak player count?

Terraforming Mars's highest concurrent player count on Steam is 1,645, reached in February 2021.

Is Terraforming Mars good? What do Steam reviews say?

71% of 5,218 Steam user reviews are positive (Mostly Positive).

How much does Terraforming Mars cost on Steam?

Terraforming Mars costs $5.99 on Steam (US), 70% off right now. The lowest price we've recorded is $4.80.

Does Terraforming Mars work on Steam Deck?

Terraforming Mars is Verified for Steam Deck, according to Valve's Steam Deck compatibility check.

Terraforming Mars

by Artefacts Studio · published by Twin Sails Interactive · Released Oct 17, 2018

Steam Deck VerifiedLinux & Deck: Gold

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Players now

#978

278

▲ 6.5%vs 24h ago · updates every minute

Review score

71% positive

Mostly Positive5,218 reviews

Owners (est.)500K–1M

24h peak

605

Highest seen1,645

Feb 20215.8 years ago

Price on Steam

$5.99 −70%

$19.99Lowest ever $4.80 Oct 2026

RisingSteadyFalling

Players +6.5% in the last 24 hoursUpdated 11:44 UTC · tracking since 2018-03-01

Concurrent players

Last 7 days

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Players onlineSteam sale started

Media & details

Screenshots, achievements, specs and price history from Steam.

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Where to buy

Steam prices for United States (change the country in the top bar), and Steam keys from authorized stores.

Steam Official

Prices update every 6 hours

$5.99

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Other authorized stores

No authorized Steam key store lists this game right now.

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Editions and bundles on Steam

Terraforming MarsEdition
−70% $19.99 $5.99
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Bundles with this game (2), biggest discount first

ExpertBundle
−56% $55.95 $24.45
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Terraforming Mars - Collection BundleBundle
−48% $50.33 $26.03
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Reviews

71% positive of 5,218 · Mostly Positive · Live from Steam

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Steam Deck

Works great on Steam Deck. Results from Valve's own testing.

Steam Deck Verified

✓Default controller config fully functional
✓Interface text is legible
✓Default configuration is performant

Steam Deck

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Patches & builds

Every build released on Steam for this game since we started tracking it, with the developer's patch notes. Updated within minutes of each new build.

Jun 9, 2026, 12:13 PM UTC
Build 23562526the current build when we started tracking318 MB on Windows

Patch notes

Nov 12, 2025
PatchTerraforming 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 fixesFixed generation counter getting stuck at “2” after th…
Oct 23, 2025
PatchTerraforming 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 volcanic shifts near Elysium Planitia.Recalibration protoco…
Sep 3, 2025
PatchTerraforming 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, delivering crucial system optimizations to keep operations on course…
Jul 21, 2025
PatchTerraforming 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 packet—an essential calibration to our systems that promises to …
Apr 30, 2025
PatchTerraforming 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 automated brush capacity—likely due to recent high-wind activit…
Apr 24, 2025
PatchTerraforming Mars 2.9.0 - Patch Notes
Mission 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 secondary water line—…

Other news (12)

Jun 9, 2026
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 server sync issue.Fix a store achievement getting the game stuck…
Apr 7, 2026
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 fixesFixed resuming game issue with Prelude, Valley Trust & Ext…
Mar 19, 2026
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: Extended Start. During setup, choose from 3 Corporations and 6 Prel…
Mar 4, 2026
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 fixesFixed game corruption case when launching the tutorial fr…
Feb 17, 2026
Terraforming 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 fixesFixed AI playing cards increasing player’s TR.Fixed using infin…
Feb 4, 2026
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 fixesFixed a softlock case when clicking a Prelude card from th…

Patches & builds

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History

What changed on Steam for this game since we started following it: prices and sales, builds, name, release date and review score.

Review score: 71% on 2026-11-01 → 71% today (5,218 reviews)

Nov 1, 2026Sale −70%$5.99 (was $19.99)
Nov 1, 2026Price$19.99

History

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DLC

6 items on Steam, newest first.

Terraforming Mars - Colonies
$5.59−20%42% positive
Terraforming Mars - Big Box Promo Pack
$2.99−40%43% positive
Terraforming Mars - Original Promo Pack
$1.79−40%46% positive
Terraforming Mars - Venus Next
$4.19−40%46% positive
Terraforming Mars - Hellas & Elysium
$4.19−40%74% positive
Terraforming Mars - Prelude
$4.19−40%79% positive

DLC

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Trading cards

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