Buy Serious Sam Siberian Mayhem CD Key for PC

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The cheapest price is 5.18€ (-48%) at Gameseal with a rating of 4.3 (16.3k reviews) · Version Steam Key · Region Global · We compare prices at 11 verified stores with 18 offers in stock · Updated on 04/08/2026 52min. ago

View 18 offers from €5.18
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  • We will start the verification process of your account, which may take 48-72 hours.
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  • 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.
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  • 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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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!
€7.08 €5.95
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.50
4.3 (16.3k)
Subscription from 2.49€/month
-15%
Coupon
SEAL17CDK -17% copy Copied!
€6.24 €5.18
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.67
4.3 (2.7k)
Subscription from 4.99€/month
-8%
Coupon
GOCDKEYS10 -10% copy Copied!
€5.88 €5.29
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€1.00
4.6 (118.9k)
Subscription from 2.99€/month
-15%
Coupon
AUGGOC10 -10% copy Copied!
€5.99 €5.39 How to get this price
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.66
4.4 (309.2k)
Coupon
GOCDKEYS10 -10% copy Copied!
€6.01 €5.41 How to get this price
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.46
4.2 (29.7k)
Coupon
Gocdkeys12 -12% copy Copied!
€6.30 €5.54
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€1.28
4.8 (223.8k)
No code available
€5.89
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees -
4.4 (309.2k)
Coupon
GOCDKEYS10 -10% copy Copied!
€7.41 €6.67 How to get this price
Europe Icon
Region Europe
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.57
4.0 (344.2k)
Coupon
GCKG2AV6R3N -34% copy Copied!
€8.41 €5.55 How to get this price
Global Icon
Region Global
Steam Key
Product type Steam Key
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Edition Standard
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Fees +€0.03
4.0 (344.2k)
Coupon
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€10.21 €7.15 How to get this price
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Region Europe
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.03
4.6 (118.9k)
Subscription from 2.99€/month
-15%
Coupon
AUGGOC10 -10% copy Copied!
€22.29 €20.06 How to get this price
Global Icon
Region Global
Steam Gift
Product type Steam Gift
Standard
Edition Standard
Description Icon
Fees +€2.45
4.6 (118.9k)
Subscription from 2.99€/month
-15%
Coupon
AUGGOC10 -10% copy Copied!
€22.29 €20.06 How to get this price
Europe Icon
Region Europe
Steam Gift
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Edition Standard
Description Icon
Fees +€2.45
4.0 (344.2k)
No code available
€21.81 How to get this price
US Icon
Region US
Steam Gift
Product type Steam Gift
Standard
Edition Standard
Description Icon
Fees +€0.07
4.0 (344.2k)
Coupon
GCKG2AV6R3N -2% copy Copied!
€22.79 €22.33 How to get this price
Global Icon
Region Global
Steam Gift
Product type Steam Gift
Standard
Edition Standard
Description Icon
Fees +€0.07
4.0 (344.2k)
Coupon
GCKG2AV6R3N -2% copy Copied!
€22.79 €22.33 How to get this price
Europe Icon
Region Europe
Steam Gift
Product type Steam Gift
Standard
Edition Standard
Description Icon
Fees +€0.07
Official stores
4.6 (78.7k)
No code available
€9.99
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€1.12
4.3 (629)
No code available
€17.38
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€1.95
1.8 (3.7k)
No code available
€19.50
Global Icon
Region Global
Steam Key
Product type Steam Key
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Edition Standard
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Fees -

About Serious Sam Siberian Mayhem

Welcome back to the world of Serious Sam in 'Siberian Mayhem' - a new standalone chapter in the adventures of 'Serious' Sam Stone. Make your way through the vast Russian landscapes on a quest to catch up with the traitorous General Brand, who remains one step ahead of Sam at every turn. The road is long, and there is oh so much to see.

Co-developed by Timelock Studio and Croteam, 'Serious Sam: Siberian Mayhem' presents an expanded look at a familiar journey full of forgotten stories, unexplored places, and Sam's trademark guns-blazing battles against Mental's Horde. Join the fight, comrade!

WELCOME TO SIBERIA

...the heart of Russia. This place is huge, cold, and so unpredictable even the alien invaders feel lost. Travel through five new levels set in a beautiful and dangerous world, from Arctic coastlines and desolate forests to abandoned villages and a chilling ghost town. Siberia is large enough for you to fight & explore for as much as you want.

BEASTS OF THE APOCALYPSE

Only the strongest souls survive in Siberia, and Mental knows it well. A new set of dangerous foes and bosses join the Horde in 'Siberian Mayhem'. Including some of the most advanced and intimidating creatures you never expected to see.

TEMPERED STEEL

There's only one thing that stands between Serious Sam and his enemies - a gun. Treat yourself with a deadly arsenal of new weapons, from the legendary AK to experimental 'Perun' crossbow, and more! Do you want to cause death from above or become one with 50 tons of first-class firepower? New gadgets and vehicles are locked, loaded, and ready to fulfill your most destructive dreams.

AT HOME AMONG STRANGERS

When you think the journey is over and there are no more stories to tell, the universe gives you a second chance. Meet a gang of new outcasts and unexpected characters who will help Sam on his journey to Tunguska. Complete side-missions in order to uncover new chronicles these wild places uphold. And pay attention to your surroundings - the world itself can tell you something you never expected to hear.

SIBERIAN MYSTERIES

The lands of Siberia are huge, desolate, and full of secrets. Useful, silly, weird, familiar... you name it. Can you find them all?

How much does Serious Sam Siberian Mayhem for PC cost right now?

Serious Sam Siberian Mayhem for PC starts at €5.18 at Gameseal, a Steam key, which is 73% under the €19.50 it costs on the official store.

That €5.18 already includes the SEAL17CDK coupon, so apply it at checkout or the store will show you a higher price.

The listing shows 18 offers from 11 stores, though only 17 can be bought at this moment — the price above comes from those.

That puts it 26% under its average of €6.98 since 2022, so today is a better entry point than most days of its life.

Steam Key
€5.18
with coupon €6.24
Stays on your account for good
Steam Gift
€20.06
with coupon €22.29
Pricier and more likely to fail

Is it worth buying the Steam Key for Serious Sam Siberian Mayhem now or waiting?

That €5.18 key is at its usual price: no bargain, no spike.

  • Those €5.18 are 34% below what it usually costs, measured on the store price.
  • 10 stores sell the Steam Key at the same time, and with that much competition the price moves almost daily.
  • Not counting today, 365 days out of the 1,024 days on record were this cheap or cheaper; the lowest it has ever cost is €3.35.
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 2,074 daily records of the Steam Key for Serious Sam Siberian Mayhem across 18 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 Serious Sam Siberian Mayhem format should you buy?

By format: Steam Key from €5.18 and Steam Gift from €20.06.

Can you activate Serious Sam Siberian Mayhem in US?

14 of the 18 offers work on US — the Global ones plus the ones issued for your own region.

Is Serious Sam Siberian Mayhem worth it?

38 outlets reviewed it and it averages 73 out of 100, with 56% recommending it.

So, which Serious Sam Siberian Mayhem deal should you buy?

Get it now: the cheapest key is at Gameseal for €5.18 and the game stays on your own account.

The lowest we have ever seen is €3.35, so waiting is unlikely to give you much more than you already have today.

WHAT CAN YOU FIND ON GOCDKEYS?

You will find a price comparison in different stores for the standard PC edition of the video game Serious Sam Siberian Mayhem in Steam Key format, to make it easier for you to find the cheapest price or the best deal.

WHAT YOU SHOULD KNOW BEFORE BUYING Serious Sam Siberian Mayhem?


What does this product include?

It includes the Serious Sam Siberian Mayhem video game for PC, although some stores may include special editions with additional content such as a Deluxe or Ultimate edition.

Are there regional restrictions for this PC game?

This product may be global or include region restrictions that only allow you to activate it in specific areas of the world such as Europe, USA or UK. Check carefully! We will let you know if there are any regional restrictions.

How will I receive the product after I purchase it?

Your product will be delivered immediately after payment via email, where you will receive a digital code, also called CD Key, which you can redeem without any problems in the official Steam store.

REASONS TO BUY Serious Sam Siberian Mayhem FOR PC


1- A new installment of the wild action saga Serious Sam in which you will be transported to the cold tundras of Russia to fight the dangerous Notorious Mental.

2- Travel through five new levels set in a beautiful and dangerous world, from arctic coasts and desolate forests to abandoned villages and a creepy ghost town.

3- Discover the wide variety of bestial weaponry and all kinds of eccentric characters. All this together will allow you to enjoy a crazy adventure full of violence and unrestrained action.

Most common FAQs when buying Serious Sam Siberian Mayhem for PC in digital format:

It is a key that will allow you to download the game Serious Sam Siberian Mayhem on your PC from official download platforms.
As of 04/08/2026, in United States, the best price we have found in our selection of online stores that include the key for Serious Sam Siberian Mayhem on PC is €5.18.
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 Serious Sam Siberian Mayhem 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 Serious Sam Siberian Mayhem, 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 Serious Sam Siberian Mayhem for PC Digital?

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About of Serious Sam Siberian Mayhem

Release date 01/26/2022
Users rating
0/5 (0 Comments)
Steam comments Very Positive Very Positive (4637 Comments)
Categories
Action Action
Tags
Adventure 3D Online Co-Op Combat Horror Action Atmospheric First-Person Shooter Dark

Languages

English*, French, Italian, German, Spanish - Spain, Japanese, Korean, Polish, Portuguese - Brazil, Russian, Simplified Chinese, Traditional Chinese, Turkish*languages with full audio support

Opencritic

73

Player Rating

56

Critics Rating

Opencritic

Reviews

US 27 ES 1 FR 1 IT 2 PT 1 RU 1 SK 2 FA 1 PL 1 CZ 1

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