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Buy Atomic Heart Enchantment Under the Sea Steam Key

Q: Why is the Steam Key of Atomic Heart Enchantment Under the Sea 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 Atomic Heart Enchantment Under the Sea to your game library. The account format requires more complicated steps and is more prone to errors during activation.

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Atomic Heart Enchantment Under the Sea Steam Key: compare prices (August 2026)

An Atomic Heart Enchantment Under the Sea 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 €5.29 (-47%) at Cdkeys Com, 47% below the €9.99 Steam price · 9 verified stores, 10 offers in stock · Updated 01h 03min ago.

Steam Key

Cheapest

€5.29 -47% Save €5 vs Steam View deal

No code available

Steam Key

Official store

€9.99 View deal

No code available

See 10 keys from €5.29

Historical prices

Medium price

Current minimum price

Atomic Heart Ench… 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

Global EU US UK

Official stores 3 stores Hide Accounts

Resellers

No payment fees With payment fees Basic price Fees incl.

Promoted store

Difmark Digital Keys 4.1 (14.2k)

Coupon

Gocdkeys -16%

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€6.50 €5.46

Store Difmark Digital Keys

Region Global

Product type Steam Key

Edition Standard

Fees +€0.46

Cdkeys Com
Kinguin
YUPLAY
Instant Gaming
G2A

Cdkeys Com 4.8 (224.4k)

Product type Steam Key

Edition Standard

Fees -

Kinguin 4.6 (120.4k)

Subscription from 2.99€/month

€6.06 €5.45 How to get this priceHow to get

Store Kinguin

Region Global

Product type Steam Key

YUPLAY 4.8 (2.5k)

Product type Steam Key

Edition Standard

Fees +€0.24

Instant Gaming 4.7 (833.8k)

No code available

€6.79

Store Instant Gaming

Region Global

Product type Steam Key

Edition Standard

Fees +€0.14

Kinguin 4.6 (120.4k)

Subscription from 2.99€/month

€7.87 €7.08 How to get this priceHow to get

Store Kinguin

Region Europe

Product type Steam Key

Edition Standard

Fees +€0.87

G2A 4.0 (346.2k)

No code available

€8.56 How to get this priceHow to get

Store G2A

Region Global

Product type Steam Key

Edition Standard

Fees +€0.03

Official stores

Humble Bundle
GamesPlanet
Steam

Humble Bundle 3.7 (2.1k)

No code available

€6.99

Store Humble Bundle

Region Global

Product type Steam Key

Edition Standard

Fees -

GamesPlanet 4.3 (629)

No code available

€7.68

Store GamesPlanet

Region Global

Product type Steam Key

Steam 1.8 (3.7k)

Product type Steam Key

Edition Standard

Fees -

About Atomic Heart Enchantment Under the Sea

Enchantment Under the Sea DLC#3 is included in the Atomic Pass, Gold and Premium Edition. Requires the base game Atomic Heart to run.

Get back to the spectacular Atomic Heart gameplay as the third DLC sees Major P-3 leave the world of Limbo and return to Facility 3826! Continue the main storyline with the Twins’ consciousness at your side and dive to the underwater Neptune Research Center to find a way to save humanity from a dismal future. Meet new and returning characters and gain access to a new arsenal to dismantle sea-dwelling threats.

The Enchantment Under the Sea DLC#3 features:

• Continuation of the story in a new underwater complex full of new exciting characters and enemies. Explore its mysteries and help P-3 and the Twin to regain what was lost. Also, revisit some familiar locations that have changed beyond recognition, like the flying city of Chelomey, now under the robots’ total control, and other surprises.

• Two new glove skills, expanding the gameplay. Whip skill, a grapple-hook tool, allowing P-3 to pull himself towards the enemies while also giving access to unreachable areas or letting him quickly dodge away from danger. Blaze, a burning polymer skill letting you drop red-hot fireballs and deal area-of-effect damage.

• Two new weapons to take down deep-sea threats. Unlock the Thunderclap, a powerful hammer that amps up damage with electrical current, and the KM-4 Kuzmich, a crowd-clearing double-barrel shotgun with customizable bullet spread.

• New enemies and powerful bosses. Face off against enhanced versions of the robots from the Facility and fight against a new roster of enemies, from Robogirl, that now poses a serious threat, to swarms of sea-dwelling mutants and the terrifying MOR-4Y lurking in the dark depths.

How much does Atomic Heart Enchantment Under the Sea for PC cost right now?

Atomic Heart Enchantment Under the Sea for PC starts at €5.29 at Cdkeys Com, a Steam key, which is 47% under the €9.99 it costs on the official store.

We have never recorded it cheaper than this.

Just 9 stores stock it, 10 offers in all, so there is little here to push the price either way.

Is it worth buying the Steam Key for Atomic Heart Enchantment Under the Sea now or waiting?

That €5.29 key is at one of its best prices.

Those €5.29 are 21% below what it usually costs, measured on the store price.
9 stores sell the Steam Key at the same time, and with that much competition the price moves almost daily.
Not counting today, the lowest we have recorded for the Steam Key across 390 days is €5.29, and today it sits exactly there.

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 1,262 daily records of the Steam Key for Atomic Heart Enchantment Under the Sea across 13 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.

Can you activate Atomic Heart Enchantment Under the Sea in US?

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

Most common FAQs when buying Atomic Heart Enchantment Under the Sea for PC in digital format:

It is a key that will allow you to download the game Atomic Heart Enchantment Under the Sea on your PC from official download platforms.

As of 26/08/2026, in United States, the best price we have found in our selection of online stores that include the key for Atomic Heart Enchantment Under the Sea on PC is €5.29.

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 Atomic Heart Enchantment Under the Sea 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 Atomic Heart Enchantment Under the Sea, 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
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We track prices every 2 hours and sort by final cost - Last update: 2026-08-26 18:07:21

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Atomic Heart Enchantment Under the Sea

Is it worth it?

Critics Rating

Player Rating

Very Positive 1,328 reviews on Steam

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What the press says

Niche Gamer

Enchantment Under the Sea is some of the best content Atomic Heart has received so far, keeping up with the quality established by the base... Read more

NoobFeed

Everything the Atomic Heart attempted to be in terms of story and portions, Enchantment Under the Sea practically delivers, and then more. My only gripe... Read more

GameSpace

While not without its drawbacks, it is an exemplary DLC, which brought additions to the plot, a pleasant combat with new mechanics and weapons, and... Read more

Games Freezer

Overall, "Atomic Heart: Enchantment Under the Sea" is a riotous sci fi FPS that had me hooked from minute one and has made me promise... Read more

Twisted Voxel

Atomic Heart - Enchantment Under The Sea is an electrifying continuation of the game's saga, delivering dynamic combat and an engaging narrative. This DLC enhances... Read more

33bits

Enchantment Under the Sea serves its purpose of expanding the Atomic Heart universe, adding new abilities and weapons, a visually stunning underwater environment, and a... Read more

STWGames Italia

Enchantment under the Sea is a great DLC that represents a significant improvement compared to previous expansions, both from a narrative and gameplay point of... Read more

CriticLenz

The third expansion of Atomic Heart, while failing to provide answers to all the unanswered questions, successfully delivers an engaging story, improved gameplay, and well-designed... Read more