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Q: Why is the Steam Key of Terraforming Mars safer than the account format?

The Steam Key format is what we always recommend due to its ease of use and higher security compared to any other format. You just need to redeem the key in your account to download Terraforming Mars to your game library. The account format requires more complicated steps and is more prone to errors during activation.

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Terraforming Mars Steam Key: compare prices from 21 offers (August 2026)

A Terraforming Mars Steam Key — also known as a CD Key or digital code — is the official activation code you redeem on Steam and keep in your library permanently. From €1.53 (-92%) at Gameseal, 92% below the €19.99 Steam price · 14 verified stores, 21 offers in stock · Updated 03h 03min ago.

Steam Key

Cheapest

€1.84 €1.53 -92% Save €18 vs Steam View deal

SEAL17CDK

-17%

Copied!

Steam Key

Official store

€19.99 View deal

No code available

See 23 keys from €1.53

Historical prices

Medium price

Current minimum price

Terraforming Mars prices: 12-month price history →

Official stores are authorized distributors, and while their prices may be higher than Key stores, their reliability is 100%.

“Choose it if you don’t mind the price difference”

Key stores are resellers and marketplaces, which is why they are usually cheaper than official stores. We only show the best ones, so you can rest assured. Plus, we offer our guarantee against any issues.

“Choose it if you’re looking for a great discount”

Editions Standard Bundle

Format Steam Key

Global EU US UK

Official stores 4 stores Hide Accounts

Resellers

No payment fees With payment fees Basic price Fees incl.

Gameseal
Gamivo
K4G
Driffle
Eneba
YUPLAY
HRKGame
Instant Gaming
G2A
Kinguin
Gaming Dragons

Gameseal 4.3 (16.3k)

Subscription from 2.49€/month

€1.84 €1.53

Product type Steam Key

Edition Standard

Fees +€0.20

Gameseal 4.3 (16.3k)

Subscription from 2.49€/month

€1.84 €1.53

Product type Steam Key

Edition Standard

Fees +€0.20

Gamivo 3.8 (49.7k)

Subscription from 2.01€/month

€1.81 €1.39 How to get this priceHow to get

Store Gamivo

Region Global

Product type Steam Key

K4G 4.3 (17.6k)

€1.86 €1.60

Product type Steam Key

Edition Standard

Fees +€0.20

Driffle 4.4 (9.2k)

Subscription from 4.99€/month

€1.92 €1.73

Product type Steam Key

Eneba 4.4 (312.9k)

€1.97 €1.77 How to get this priceHow to get

Store Eneba

Region Global

Product type Steam Key

Eneba 4.4 (312.9k)

€2.20 €1.98 How to get this priceHow to get

Store Eneba

Region Europe

Product type Steam Key

YUPLAY 4.8 (2.5k)

Product type Steam Key

HRKGame 4.2 (29.7k)

€2.78 €2.45

Product type Steam Key

Edition Standard

Fees +€0.79

Instant Gaming 4.7 (833.8k)

No code available

€2.59

Store Instant Gaming

Region Global

Product type Steam Key

Eneba 4.4 (312.9k)

€3.29 €2.96 How to get this priceHow to get

Store Eneba

Region US

Product type Steam Key

Edition Standard

Fees +€0.25

G2A 4.0 (346.2k)

No code available

€3.29 How to get this priceHow to get

Store G2A

Region Global

Product type Steam Key

Edition Standard

Fees +€0.01

Kinguin 4.6 (120.4k)

Subscription from 2.99€/month

€3.65 €3.29 How to get this priceHow to get

Store Kinguin

Region Global

Product type Steam Key

Edition Standard

Fees +€0.40

Gaming Dragons 2.3 (203)

No code available

€3.61

Store Gaming Dragons

Region Global

Product type Steam Key

HRKGame 4.2 (29.7k)

€4.64 €4.08

Product type Steam Key

G2A 4.0 (346.2k)

€6.19 €4.83 How to get this priceHow to get

Store G2A

Region Global

Product type Steam Key

Eneba 4.4 (312.9k)

€11.00 €9.90 How to get this priceHow to get

Store Eneba

Region Global

Product type Steam Key

Edition Bundle

Fees +€0.84

Kinguin 4.6 (120.4k)

Subscription from 2.99€/month

€17.90 €16.11 How to get this priceHow to get

Store Kinguin

Region Global

Product type Steam Key

Edition Standard

Fees +€1.97

G2A 4.0 (346.2k)

No code available

€24.09 How to get this priceHow to get

Store G2A

Region Global

Product type Steam Key

Edition Standard

Fees +€0.07

Official stores

Fortunadigital
Greenmangaming
GamesPlanet
Steam

Fortunadigital 4.0 (4)

No code available

€5.60

Store Fortunadigital

Region Global

Product type Steam Key

Edition Standard

Fees -

Greenmangaming 4.7 (43.9k)

No code available

€5.74

Store Greenmangaming

Region Global

Product type Steam Key

Edition Standard

Fees -

GamesPlanet 4.3 (629)

No code available

€15.38

Store GamesPlanet

Region Global

Product type Steam Key

Steam 1.8 (3.7k)

Product type Steam Key

Edition Standard

Fees -

How much does Terraforming Mars for PC cost right now?

Terraforming Mars for PC starts at €1.53 at Gameseal, a Steam key, which is 92% under the €19.99 it costs on the official store.

We have never recorded it cheaper than this.

That €1.53 already includes the SEAL17CDK coupon, so apply it at checkout or the store will show you a higher price.

With 21 offers across 14 stores there is enough competition for the price to move, so the gap between the cheapest and the rest is worth checking before you buy.

Is it worth buying the Steam Key for Terraforming Mars now or waiting?

That €1.53 key is at one of its best prices.

Those €1.53 are 64% below what it usually costs, measured on the store price.
14 stores sell the Steam Key at the same time, and with that much competition the price moves almost daily.
Not counting today, only 29 days out of the 1,901 days on record were this cheap or cheaper; the lowest it has ever cost is €1.34.

At this price it is worth buying the Steam Key now: what you stand to gain by waiting is a few euros, and it is not guaranteed.

Worked out from 3,728 daily records of the Steam Key for Terraforming Mars across 24 stores. See the full price history.

The price does not include each store's payment fees. The percentage is measured on the store price, without coupons, because that is how we record the history. The analysis only counts Key offers. Shared accounts, Steam Gift and physical editions stay out, because they are not the same product and their prices move differently.

Which Terraforming Mars editions are on sale?

Beyond the standard edition at €1.53, there is the Bundle at €9.90 at Eneba, €8.37 more. Check on the store what each one adds before paying the difference.

Can you activate Terraforming Mars in US?

19 of the 21 offers work on US — the Global ones plus the ones issued for your own region.

Why is there such an expensive Terraforming Mars offer?

One listing is worth ignoring: the Steam key that G2A has at €24.09 is more than 15 times the cheapest offer and is not what this game costs. The number to work from is €1.53 at Gameseal.

At Terraforming Mars we will maintain a constant struggle for control of resources and the establishment of colonies on the red planet. Corporations are competing to transform Mars into a habitable planet by spending vast amounts of resources and money, but as the red planet becomes habitable, we will see population exoduses from the Earth to Mars, so we must be able to establish all these people and give them a dignified life.

We will be in charge of one of these mega corporations and our main task will be to decide how many resources are allocated and in what they are invested. Establishing a productive system, locating cities and green areas, and ultimately structuring the bases of the new civilization on Mars.

It is a turn-based strategy game, a faithful adaptation of the board game, in which we must select one of the corporations, create facilities, research innovative technologies and manage resources.

Most common FAQs when buying Terraforming Mars for PC in digital format:

It is a key that will allow you to download the game Terraforming Mars on your PC from official download platforms.

As of 22/08/2026, in United States, the best price we have found in our selection of online stores that include the key for Terraforming Mars on PC is €1.53.

The Steam Key format is what we always recommend due to its ease of use and higher security compared to any other format. You just need to redeem the key in your account to download Terraforming Mars to your game library. The account format requires more complicated steps and is more prone to errors during activation.

The only issue we’ve encountered in 13 years is receiving a duplicate key that doesn’t work. In that case, simply contact the store where you bought Terraforming Mars, and they will provide a new key. You can also contact us, and we’ll help you out.

Delivery times vary by store. For example, in the case of Instatgaming, Eneba, G2a, or Kinguin, delivery is usually instant or takes just a few minutes. These stores rarely delay game deliveries.

Other stores may take 30–40 minutes depending on game availability. On release days, delivery times may be slightly longer.

If you notice an unusually long delay, contact the store or us, and we’ll resolve it as quickly as possible.

At Gocdkeys, we only list the most well-known stores that have passed our quality checks. One of the most important factors is good customer support, and all listed stores offer it.

There have been occasions when those services were overwhelmed, which is why we also offer 24/7 customer support to help resolve any issues or questions.

In any case, we always offer a 100% guarantee, so you won’t have any problems, and if you do, we’ll resolve them as soon as possible.

Need more help? Use our FAQs.

Gocdkeys - Transparency and credibility

At GOCDKEYS we display real prices from 49 verified stores. Some links may be affiliate links, which help us keep the service running at no extra cost to users. Prices and conditions are always exactly the same as those offered by the store. All stores go through our own store verification methodology, so you can buy with complete confidence.

If you have doubts before buying, we explain why CD keys are legal and break down the most common myths and facts about digital games, so you can make your decision with clear and up-to-date information.

More than 4.5M users in 14 years have trusted us to find the best deals — Trustpilot 4.1/5 ★
We compare 49 verified stores where we find the best deals for gamers
24/7 support to help you with any issues in your purchases
We track prices every 2 hours and sort by final cost - Last update: 2026-08-23 00:07:47

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Terraforming Mars

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Mostly Positive 5,183 reviews on Steam

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What the press says

COGconnected

Whether or not Terraformers is the game for you depends a lot on what you are looking for. This isn’t a digital garden that you... Read more

Softpedia

Terraformers is an engaging game that can deliver that “one more turn” feeling that strategy fans crave. The interplay between resources, cards, leaders, and terraforming... Read more

Entertainment Geekly

Terraformers on Xbox is a thoughtful, ambitious strategy title that manages to translate its deep systems into a surprisingly console-friendly experience. Read more

New Game Network

Terraformers may not be greater than the sum of its parts, but its unique mix of mechanics and low asking price should help spark curiosity... Read more

Thumb Culture

For an Early Access release Terraformers is well on the right path to being a great fun game. All the right boxes are ticked for... Read more

eXputer

I think that Terraformers is okay. I had fun with it, and I’ll definitely jump back into it when version 1.0 launches. But right now,... Read more