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Terraforming Mars

Terraforming Mars

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.

Released Oct 17, 2018 Developer Artefacts Studio Publisher Twin Sails Interactive Platforms Windows · Mac StrategyBoard GameSpaceTabletopTurn-Based
View on Steam ↗ $19.99 (US · as of 2026-07-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.

71.8%positive6,629 reviews
Recommended · 3 found this helpful

“The tabletop version is in general superior. What I like about this one: * allows me to play with actual players anytime of day * obviously the stup time is negligable * resource moving, upkeep, calculations are taken care of * Turns go by quickly, a game may last about 45…”

— a player, Steam review · 82 hrs played
Recommended · 2 found this helpful

“I enjoy this board game, and with the addition of the new DLC, it has a lot of mechanics to keep track of. I usually just play against the PC, and I win, but it is a fun game for a 45 min or so play through. If you play with other people, be prepared for a longer game ~3+ hours…”

— a player, Steam review · 336 hrs played
Not recommended · 15 found this helpful

“I have played this for over 1000 hours and its been buggy as hell from the start. And despite the MULTIPLE buggfixes and patches its not getting any better. Grab some friends and pull out the board game and enjoy the real thing.”

— a player, Steam review · 1,106 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live count fetched 2026-07-11 12:59 UTC · history via SteamCharts.

351playing at last check
47424-hour peak
1,645all-time peak
0 500 1k 2019 2021 2023 2025 727 avg · Feb 2021

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-07-25.

40achievements
18.3%median completion
0.9%rarest: Colonisation
68.2% of players 64.3% of players 60.8% of players 56.4% of players 54.1% of players 53.3% of players 49.7% of players 47.9% of players 45.0% of players 45.0% of players 42.8% of players 41.0% of players 39.0% of players 28.7% of players 27.5% of players 27.0% of players 25.5% of players 25.1% of players 24.2% of players 24.0% of players 18.3% of players 12.5% of players 12.4% of players 10.8% of players 10.2% of players 7.4% of players 7.3% of players 7.2% of players 6.1% of players 4.8% of players 4.6% of players 4.2% of players 4.1% of players 3.9% of players 3.2% of players 2.6% of players 2.1% of players 2.1% of players 1.6% of players 0.9% of players 68.2% 0% most earned rarest
Almost everyone has
68.2%Prop-M Rover — Get a production of M€ of 10 or more in a single game
64.3%It's a steal! — Pay for a card using only Steel or Titanium
60.8%Changing the Planet — Get a Terraforming Rating of 40 in a single game, before the end game
Rarest badges of honor
0.9%Colonisation — Win 5 online games with the Colonies extension.
1.6%Consultant — Play all Venus Next corporations at least once in online games.
2.1%Trading Legend — Make 60 trades in any game, with any Colony Tile.

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.

$19.99current · sampled 2026-07-26 08:39 UTC
$19.99lowest since tracking began2026-07-11
US19.99 USD
EU19.99 EUR
UK16.75 GBP
Australia29.50 AUD
Canada25.99 CAD
Japan2,300 JPY
Brazil59.99 BRL
China76.00 CNY

Regional prices at last sample, in local currency — Steam sets each region's price independently.

China≈$11 Brazil Japan Canada US Australia UK EU≈$23

Cheapest → most expensive, converted to USD at ECB reference rates (2026-07-24). Relative comparison only.

$0 $25 $50 07-11 07-13 07-16 07-19 07-22 07-26

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Jun 09, 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 serv

Apr 07, 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 fix

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: Extende

Mar 04, 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 fi

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 fixesFix

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Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-20.

GenresStrategy
Player tagsStrategy · Board Game · Space · Tabletop · Turn-Based · Mars · Multiplayer · Sci-fi · Singleplayer · Management · Turn-Based Strategy · Base-Building (SteamSpy community voting)
FeaturesSingle-player · Multi-player · PvP · Online PvP · Shared/Split Screen PvP · Steam Achievements · Steam Turn Notifications · Remote Play Together
LanguagesEnglish, French, Italian, German, Spanish - Spain, Swedish
Achievements40
Estimated owners500,000 – 1,000,000 (SteamSpy)
Official sitehttps://www.Twin-Sails.com
Minimum system requirements (PC)

Minimum: OS *: Windows 7 / Windows 8 / Windows 10 Processor: Dual Core 3.0 GHz Memory: 4 GB RAM Storage: 250 MB available space