Buy Mainframe Defenders CD Key for PC

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A Mainframe Defenders All Key — also known as a CD Key or digital code — is the official activation code you redeem on All and keep in your library permanently. From €0.79 at Gamivo · 8 verified stores, 16 offers in stock · Updated 01h 34min ago.

View 16 offers from €0.50
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  • We will start the verification process of your account, which may take 48-72 hours.
  • If you have not broken any of our rules, we will send you the cheapest version of the game to the email address associated with your account.
  • In the event that the game is out of stock or only available in a format such as accounts or physical, we will offer the possibility of an exchange for a prepaid card for the minimum value of the game on our platform.
  • For console games, a prepaid card of different amounts will be given instead of the game, due to regional limitations.
  • Your tickets will disappear from your account
  • This promotion is only available to US, UK and EU users.
  • Game redemption is only allowed once every 6 months per user.
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Product you are redeeming

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  • We will start the verification process of your account, which may take 48-72 hours.
  • If you have not broken any of our rules, we will send you the cheapest version of the game to the email address associated with your account.
  • In the event that the game is out of stock or only available in a format such as accounts or physical, we will offer the possibility of an exchange for a prepaid card for the minimum value of the game on our platform.
  • For console games, a prepaid card of different amounts will be given instead of the game, due to regional limitations.
  • Your tickets will disappear from your account
  • This promotion is only available to US, UK and EU users.
  • Game redemption is only allowed once every 6 months per user.
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Taxes not included! Taxes included!
Prices without final payment fees but with discount coupons applied. Prices include payment fees and any store discount code applied.
Key stores
Promoted store
4.1 (12.1k)
Coupon
Gocdkeys -16% copy Copied!
€4.39 €3.69
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Region Europe
Steam Gift
Product type Steam Gift
Standard
Edition Standard
Description Icon
Fees +€0.31
4.3 (16.3k)
Subscription from 2.49€/month
-15%
Coupon
SEAL17CDK -17% copy Copied!
€0.60 €0.50
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.06
3.8 (49.5k)
Subscription from 2.01€/month
-9%
Coupon
GCDKGamivo -23% copy Copied!
€0.93 €0.72 How to get this price
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.13
4.4 (309.2k)
Coupon
GOCDKEYS10 -10% copy Copied!
€0.89 €0.80 How to get this price
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.07
4.4 (309.2k)
Coupon
GOCDKEYS10 -10% copy Copied!
€0.98 €0.88 How to get this price
Europe Icon
Region Europe
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.08
4.6 (118.9k)
Subscription from 2.99€/month
-15%
Coupon
AUGGOC10 -10% copy Copied!
€2.23 €2.01 How to get this price
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.25
4.3 (2.7k)
Subscription from 4.99€/month
-8%
Coupon
GOCDKEYS10 -10% copy Copied!
€2.39 €2.15
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.61
4.6 (118.9k)
Subscription from 2.99€/month
-15%
Coupon
AUGGOC10 -10% copy Copied!
€2.67 €2.40 How to get this price
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.29
4.4 (309.2k)
Coupon
GOCDKEYS10 -10% copy Copied!
€2.72 €2.45 How to get this price
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Region Global
GOG Key
Product type GOG Key
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Edition Standard
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Fees +€0.21
4.0 (344.2k)
No code available
€4.65 How to get this price
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.01
4.6 (118.9k)
Subscription from 2.99€/month
-15%
Coupon
AUGGOC10 -10% copy Copied!
€5.61 €5.05 How to get this price
Global Icon
Region Global
Steam Gift
Product type Steam Gift
Standard
Edition Standard
Description Icon
Fees +€0.62
3.8 (49.5k)
Subscription from 2.01€/month
-9%
Coupon
GCDKGamivo -23% copy Copied!
€6.16 €4.74 How to get this price
Global Icon
Region Global
Steam Gift
Product type Steam Gift
Standard
Edition Standard
Description Icon
Fees +€0.86
4.2 (29.7k)
Coupon
Gocdkeys12 -12% copy Copied!
€7.53 €6.63
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€1.45
4.2 (29.7k)
Coupon
Gocdkeys12 -12% copy Copied!
€7.53 €6.63
Europe Icon
Region Europe
Steam Gift
Product type Steam Gift
Standard
Edition Standard
Description Icon
Fees +€1.45
4.0 (344.2k)
Coupon
GCKG2AD1Y4E -23% copy Copied!
€6.96 €5.36 How to get this price
Global Icon
Region Global
Steam Gift
Product type Steam Gift
Standard
Edition Standard
Description Icon
Fees +€0.02
4.0 (344.2k)
Coupon
GCKG2AD1Y4E -23% copy Copied!
€6.96 €5.36 How to get this price
Europe Icon
Region Europe
Steam Gift
Product type Steam Gift
Standard
Edition Standard
Description Icon
Fees +€0.02

How much does Mainframe Defenders for PC cost right now?

Mainframe Defenders for PC starts at €0.79 at Gamivo, a Steam key.

That €0.79 already includes the GCDKGamivo coupon, so apply it at checkout or the store will show you a higher price.

The cheapest one listed, €0.50 at Gameseal, is out of stock. The cheapest you can actually buy today is €0.79 at Gamivo.

8 stores carry it, 16 offers in total and 13 available right now; the figure above is the cheapest of the ones you can actually order.

Steam Key
€0.79
with coupon €0.93
Stays on your account for good
Steam Gift
€3.69
with coupon €4.39
Pricier and more likely to fail

Is it worth buying the Steam Key for Mainframe Defenders now or waiting?

That €2.01 key is at its usual price: no bargain, no spike.

  • Those €2.01 are 13% below what it usually costs, measured on the store price.
  • Only 3 stores sell the Steam Key, and with that little competition the price barely moves.
  • Not counting today, 323 days out of the 612 days on record were this cheap or cheaper; the lowest it has ever cost is €1.09.
It is not a bad price, but it is not this Steam Key's floor either. If you are in no rush, we will tell you the day it drops.

Worked out from 977 daily records of the Steam Key for Mainframe Defenders across 8 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 Mainframe Defenders format should you buy?

By format: Steam Key from €0.79, GOG Key from €2.45 and Steam Gift from €3.69.

Can you activate Mainframe Defenders in US?

12 of the 16 offers work on US — the Global ones plus the ones issued for your own region.

Why is there such an expensive Mainframe Defenders offer?

One listing is worth ignoring: the Steam gift that G2A has at €6.96 is more than 8 times the cheapest offer and is not what this game costs. The number to work from is €0.79 at Gamivo.

WHAT CAN YOU FIND ON GOCDKEYS?


You will find a price comparison in different stores for the standard PC edition of the video game Mainframe Defenders in Steam Key format, to make it easier for you to find the cheapest price or the best offer.

TOP 3 REASONS TO BUY Mainframe Defenders FOR PC


1- Enjoy an impressive retro strategy experience.

2- Worlds generated by random procedures so you can replay it again infinite times.

3- Great variety of combination of characters with objects that have their own mechanics.

INFORMATION ABOUT Mainframe Defenders


GENRE

It is a block strategy videogame with roguelike mechanics in a retro futuristic environment in the style of the arcade videogames of the 80s.

STORY

A dreaded virus has infected a research plant and the machines inside have become infected and dangerous. You must control 4 experimental robotic models that will fight to defend the Mainframe and clean the corruption that has invaded everything.

FEATURES

- Tactical turn-based combat system.

- Create your own customized team of Mainframe defenders.

- Equip items with your own mechanics to your character with thousands of possible combinations.

- Scenarios generated by random procedures.

- Enemies with their own abilities and behavior.

YOU STILL DON'T KNOW IF YOU WANT TO BUY Mainframe Defenders FOR PC?


If you are still not convinced by a high launch price, then from Gocdkeys we recommend that you set a price alarm from our filters to alert you as soon as it drops to a certain price. Simply enter your email in the "Price Alert" button and we will notify you as soon as the price drops.

If you need more information about all the news of this game, then we recommend you to visit the official website of the developer Mega9pixel.

Most common FAQs when buying Mainframe Defenders for PC in digital format:

It is a key that will allow you to download the game Mainframe Defenders on your PC from official download platforms.
As of 06/08/2026, in United States, the best price we have found in our selection of online stores that include the key for Mainframe Defenders on PC is €0.50.
The All 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 Mainframe Defenders 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 Mainframe Defenders, 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.

What do our users think of Mainframe Defenders for PC Digital?

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About of Mainframe Defenders

Release date 05/17/2021
Users rating
0/5 (0 Comments)
Categories
Strategy Strategy

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