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Q: Why is the Steam Key of M.A.S.S. Builder 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 M.A.S.S. Builder to your game library. The account format requires more complicated steps and is more prone to errors during activation.

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M.A.S.S. Builder Steam Key: compare prices from 10 offers (August 2026)

A M.A.S.S. Builder 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 €2.88 (-83%) at Kinguin, 83% below the €17.15 Steam price · 7 verified stores, 10 offers in stock · Updated 01h 22min ago.

Gift cards

Cheapest

€3.20 €2.88 -83% Save €14 vs Steam View deal

AUGGOC10

-10%

Copied!

Steam Key

Official store

€17.15 View deal

No code available

See 9 keys from €2.88

Historical prices

Medium price

Current minimum price

M.A.S.S. Builder 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

Format Steam Key Steam Gift

Global EU US UK

Official stores 2 stores Hide Accounts

Resellers

No payment fees With payment fees Basic price Fees incl.

Kinguin
Gamivo
Eneba
G2A
Cdkeys Com
HRKGame

Kinguin 4.6 (120.4k)

Subscription from 2.99€/month

€3.20 €2.88 How to get this priceHow to get

Store Kinguin

Region Global

Product type Steam Key

Edition Standard

Fees +€0.35

Gamivo 3.8 (49.7k)

Subscription from 2.01€/month

€3.40 €2.62 How to get this priceHow to get

Store Gamivo

Region Global

Product type Steam Key

Eneba 4.4 (312.9k)

€3.36 €3.02 How to get this priceHow to get

Store Eneba

Region Global

Product type Steam Key

Eneba 4.4 (312.9k)

€3.37 €3.03 How to get this priceHow to get

Store Eneba

Region Europe

Product type Steam Key

Edition Standard

Fees +€0.26

G2A 4.0 (346.2k)

No code available

€4.92 How to get this priceHow to get

Store G2A

Region Global

Product type Steam Key

Edition Standard

Fees +€0.01

Cdkeys Com 4.8 (224.4k)

Product type Steam Key

HRKGame 4.2 (29.7k)

€16.88 €14.85

Product type Steam Key

Edition Standard

Fees +€2.76

G2A 4.0 (346.2k)

No code available

€22.40 How to get this priceHow to get

Store G2A

Region Global

Product type Steam Gift

Edition Standard

Fees +€0.07

G2A 4.0 (346.2k)

No code available

€22.40 How to get this priceHow to get

Store G2A

Region Europe

Product type Steam Gift

Edition Standard

Fees +€0.07

Official stores

Steam
Greenmangaming

Steam 1.8 (3.7k)

Product type Steam Key

Edition Standard

Fees -

Greenmangaming 4.7 (43.9k)

No code available

€24.50

Store Greenmangaming

Region Global

Product type Steam Key

Edition Standard

Fees -

How much does M.A.S.S. Builder for PC cost right now?

M.A.S.S. Builder for PC starts at €2.88 at Kinguin, a Steam key, which is 83% under the €17.15 it costs on the official store.

That €2.88 already includes the AUGGOC10 coupon, so apply it at checkout or the store will show you a higher price.

Supply is thin — 10 offers from 7 stores — and thin supply keeps prices steady rather than falling.

It is €0.19 away from its all-time low (€2.69, back in December 2021).

Steam Key

€2.88

with coupon ~~€3.20~~

Stays on your account for good

Steam Gift

€22.40

Pricier and more likely to fail

Is it worth buying the Steam Key for M.A.S.S. Builder now or waiting?

That €2.88 key is at one of its best prices.

Those €2.88 are 77% below what it usually costs, measured on the store price.
Only 7 stores sell the Steam Key, and with that little competition the price barely moves.
Not counting today, only 72 days out of the 1,811 days on record were this cheap or cheaper; the lowest it has ever cost is €2.69.

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 2,825 daily records of the Steam Key for M.A.S.S. Builder across 10 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 M.A.S.S. Builder format should you buy?

By format: Steam Key from €2.88 and Steam Gift from €22.40.

Can you activate M.A.S.S. Builder in US?

8 of the 10 offers work on US — the Global ones plus the ones issued for your own region.

Why is there such an expensive M.A.S.S. Builder offer?

One listing is worth ignoring: the Steam key that Greenmangaming has at €24.50 is more than 8 times the cheapest offer and is not what this game costs. The number to work from is €2.88 at Kinguin.

This version of the game M.A.S.S. Builder is a cd key or digital key for PC, and must be downloaded and activated from official game platforms, such as STEAM. From Gocdkeys we group both the official shops (Steam, Greenmangaming,...) and the unofficial ones (G2A, Instantgaming, Kinguin,...) that sell the key of this Mechs combat construction simulator. Although we will have to build them, we will also be able to test their qualities and characteristics in combat against an enemy that threatens the existence of humanity.

What digital versions of M.A.S.S. Builder for PC will you find in Gocdkeys?

From Gocdkeys we always compare digital versions of STEAM games. Although most versions are in cd key or digital key format, there are some versions in "STEAM Gift" format, which once purchased are activated through an activation link that is sent to the email.

Many of these "STEAM Gifts" and M.A.S.S. Builder cd keys can have regional blocking, which means that they can only be activated from certain regions, so pay attention to this information.

Before buying M.A.S.S. Builder you should know that...

It all starts with the appearance of some unknown beasts of the void. At that moment, it is when the war for the survival of humanity began. In a last attempt by humans not to become extinct, they were forced to evolve their technology to unsuspected limits, and that's when the technology of the M.A.S.S. was born.

The game is an action RPG in which we will build and pilot an M.A.S.S. (Mechanical Assault Skeleton Suit or Mechs) as commander of a private military company, with the aim of helping to combat the threat of the Quarks. We'll build, customize and fight to save the world, and if you're only interested in the construction part, we can devote ourselves exclusively to building the perfect war machines and see how others pilot them, to later adapt their weaponry and make them more destructive.

Most common FAQs when buying M.A.S.S. Builder for PC in digital format:

It is a key that will allow you to download the game M.A.S.S. Builder on your PC from official download platforms.

As of 23/08/2026, in United States, the best price we have found in our selection of online stores that include the key for M.A.S.S. Builder on PC is €2.88.

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 M.A.S.S. Builder 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 M.A.S.S. Builder, 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 08:05:33

What do our users think of M.A.S.S. Builder for PC Digital?

5/5 (2 Comments)

paubono

2020-05-03 17:46:52

Muy buen juego lo tendria que desgcargar mas personas porque neste juego es de los mejores que he jugado muchas gracias por tratraer juegos así.

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M.A.S.S. Builder

Is it worth it?

Very Positive 3,721 reviews on Steam

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