Buy Extinction Day Steam Key

PC
Extinction Day cover
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An Extinction Day 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 €7.26 (€7.79 with fees, -46%) at Key4Games, Steam Account format · Cheapest official key: €14.49 (no fees) · 4 verified stores, 4 offers in stock · Updated 01h 28min ago.

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Gocdkeys -16% copy Copied!
€8.99 €7.55 -46%Save €7 vs Steam
Store Difmark
Global Icon
Region Global
Steam Account
PromotediFeatured placement paid by the storeCheapest deal Best rated Product type Steam Account
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Edition Standard
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Fees +€0.34
Recommended by GoCDKeysiStore recommended by GOCDKEYS for this game
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About Extinction Day

Humanity will do everything to survive.

You will make sure they don’t.

Unleash disasters, plagues, and war, and wipe them out before they escape to the Ark.

HOW YOU PLAY

• Deploy disasters, plagues, and warfare across the globe

• Gain resources from destruction and expand your reach

• Combine events to trigger devastating chain reactions

• Upgrade your abilities and shape your strategy

• Stop humanity’s desperate attempts to survive

HUMANITY FIGHTS BACK

They won’t go down without a fight.

• Governments mobilize to contain your disasters and secure key territories

• Scientists race to develop countermeasures and slow your expansion

• Global aid efforts stabilize regions and limit the damage you cause

• As the end approaches, humanity begins constructing a space Ark to escape

UNLEASH CATASTROPHES

There are many ways to end the world. Find yours.

• Trigger over 10 unique disasters, from plagues to global warfare

• Combine events to create powerful and unpredictable chain reactions

• Strike regions precisely with active abilities

• Experiment and discover the fastest path to extinction

MASTER YOUR STRATEGY

Every decision matters.

• Manage resources to fuel your expansion

• Choose your upgrade path and define your playstyle

• Unlock new abilities and strengthen your strategy

• Adapt as humanity evolves and pushes back

• Timing, positioning, and combinations make all the difference

GLOBAL DESTRUCTION, ENDLESS STRATEGIES

No two runs play the same.

• 18 campaign missions across 4 difficulty levels

• 28 challenge scenarios with unique rules

• Over 70 perks and upgrades to unlock

• 25+ achievements to complete

• Dozens of hours of replayable destruction

How much does Extinction Day for PC cost right now?

Extinction Day for PC starts at €7.26 (€7.79 with fees) at Key4Games, 46% under the €14.49 (no fees) of the official store — but that is a shared account, not a key of your own. If you want a key tied to your own account, the cheapest is €14.49 (no fees) at Steam.

That €7.26 (€7.79 with fees) already includes the GOCDKEYS16 coupon, so apply it at checkout or the store will show you a higher price.

Supply is thin — 4 offers from 4 stores — and thin supply keeps prices steady rather than falling.

That puts it 28% under its €19.99 average of the last 7 months, so today is a better entry point than most.

Shared account !
€7.79
with coupon · was €9.22
Cheapest, but the game is not yours
Steam Key
€14.49
Stays on your account for good

Is it worth buying the Steam Key for Extinction Day now or waiting?

That €14.49 (no fees) key is at its usual price: no bargain, no spike.

  • Those €14.49 (no fees) are 11% below what it usually costs, measured on the store price.
  • Only 2 stores sell the Steam Key, and with that little competition the price barely moves.
  • Not counting today, 77 days out of the 217 days on record were this cheap or cheaper; the lowest it has ever cost is €6.41.
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 327 daily records of the Steam Key for Extinction Day across 2 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.

Are these stores safe to buy Extinction Day from?

One caveat worth €0.29 (€0.10 with fees): the €7.26 (€7.79 with fees) at Key4Games is the cheapest, but that store carries only 37 Trustpilot reviews, so there is barely any track record behind it. Difmark sells the same shared account for €7.55 (€7.89 with fees) — €0.29 (€0.10 with fees) more — backed by 14.2k reviews and a 4.1 out of 5, which is a small premium for a seller thousands of buyers have already tested.

Which Extinction Day format should you buy?

With the shared account at Key4Games you log into an account that already owns the game: it is the cheapest route, but it never becomes yours and the seller keeps the credentials. If they ever lose or change them, you lose access.

The key at Steam costs €7.23 (€6.70 with fees) more, but you redeem it on your own account and the game stays there for good. That is the difference between renting and buying.

Can you activate Extinction Day in US?

All 4 offers are Global, so the code redeems on any account no matter where it was created.


Most common FAQs when buying Extinction Day for PC in digital format:

It is a key that will allow you to download the game Extinction Day on your PC from official download platforms.
As of 10/11/2026, in United States, the best price we have found in our selection of online stores that include the key for Extinction Day on PC is €14.49 (no fees).
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 Extinction Day 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 Extinction Day, 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.

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