What is the key for Serious Sam Siberian Mayhem on PC?

It is a key that will allow you to download the game Serious Sam Siberian Mayhem on your PC from official download platforms.

What's the best price for buying the key of Serious Sam Siberian Mayhem for PC?

As of 05/12/2025, 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 €4.68.

Which digital format of Serious Sam Siberian Mayhem should I buy for PC? An Account or a Steam Key ?

The account format is cheaper but has a more complicated activation process compared to a simple key or code. It may also cause access issues in the future, which is why we only recommend it to users who are familiar with this format or have used it before. If you’re looking for a simpler and safer activation process and don’t mind paying a bit more, we recommend buying the Steam Key format.

If I buy the account format of Serious Sam Siberian Mayhem, will the store provide all the activation instructions?

Yes, stores that sell this format usually guide users through the entire activation process, and if any issues arise, they offer customer support services. And if they don’t help, don’t worry—we’re here to assist you too.

Why is the Steam Key of Serious Sam Siberian Mayhem 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 Serious Sam Siberian Mayhem to your game library. The account format requires more complicated steps and is more prone to errors during activation.

What issues can arise when activating a Steam Key of Serious Sam Siberian Mayhem?

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.

How long will I have to wait to receive the Steam Key of Serious Sam Siberian Mayhem after purchasing it from a store?

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.

What guarantee do I have that the listed stores are reliable?

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.

Can I return a digital game for PC?

Some digital formats allow returns under certain conditions.

The store does not send my order and does not respond to support. What can I do?

Don't worry, we have the solution. We will handle it ourselves.

The final price is higher than indicated.

Many stores add payment fees, taxes,... in the cart. So be prepared to spend a little more.

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Calm down, don't panic. Contact us and we will help you resolve it as soon as possible.

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Best offers for Serious Sam Siberian Mayhem Steam Key for PC (December 2025)

The cheapest price is 4.68€ (-71%) at Eneba with a rating of 4.4 (179.8k reviews) · Version Steam Key · Region Global · We compare prices at 13 verified stores with 20 active offers · Updated on 05/12/2025 01h 04min. ago

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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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The offer from Eneba in KEY format for 4.68€ is currently the cheapest

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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?

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:

What is the key for Serious Sam Siberian Mayhem on PC?

It is a key that will allow you to download the game Serious Sam Siberian Mayhem on your PC from official download platforms.
What's the best price for buying the key of Serious Sam Siberian Mayhem for PC?

As of 05/12/2025, 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 €4.68.
Why is the Steam Key of Serious Sam Siberian Mayhem safer than the account format? See more

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.
What issues can arise when activating a Steam Key of Serious Sam Siberian Mayhem? See more

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.
How long will I have to wait to receive the Steam Key of Serious Sam Siberian Mayhem after purchasing it from a store? See more

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.
What guarantee do I have that the listed stores are reliable? See more

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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About of Serious Sam Siberian Mayhem

Release date	01/26/2022
Users rating	0/5 (0 Comments)
Steam comments	Very Positive Very Positive (4043 Comments)
Categories	Action
Tags Adventure Multiplayer Singleplayer 3D Fantasy Online Co-Op Combat Horror Co-op Action

Languages

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

Opencritic

Player Rating

Critics Rating

Reviews

WayTooManyGames

If you have somehow enjoyed the base Serious Sam 4, you will most certainly enjoy Siberian Mayhem. It’s pretty much the same damn game, just... Read more

MonsterVine

The video game equivalent of being picked up in a 2000 F-250 by a guy blasting Skynyrd and yelling HELL YEAH BROTHER at everything you... Read more

Gameffine

100

In short, Siberian Mayhem is a better version of Serious Sam 4 with tight pacing, well-thought-out combat arenas and some old-school touches. While the performance... Read more

More reviews

NoobFeed

Serious Sam: Siberian Mayhem adds directly to Serious Sam 4 without changing much. Despite being a standalone expansion, players should go through Serious Sam 4... Read more

GamesCreed

It’s a game that relishes in its proclivity for ridiculous violence and over-the-top set pieces, and considering you can mostly ignore the superfluous additions, what... Read more

GameSpace

Serious Sam - Siberian Mayhem is an insanely driving and cool action game that ends exactly when you already want to take a break from... Read more

Hey Poor Player

Siberian Mayhem is an entertaining little jaunt for fans of Serious Sam 4. It’s a quick five levels to run through, and I wish it... Read more

New Game Network

Siberian Mayhem improves on Serious Sam 4 in several areas, except where it mattered most: performance. The expansion's poor framerates and tech issues are a... Read more

TheGamer

Even as Siberian Mayhem quickly descends into chaos and sheer pandemonium, there’s always a final word to be had, or one last gunshot to haphazardly... Read more

TechRaptor

Siberian Mayhem recalls Sam's glory days in the best way, providing a bombastic adventure that doesn't overstay its welcome. Read more

GameOnAUS

Serious Sam: Siberian Mayhem is more of the chaos, mayhem and classic one-liners, but some recurring issues from Serious Sam 4 reared their heads marring... Read more

The Beta Network

Serious Sam Siberian Mayhem is simply a good run and gun game. There really isn’t much emphasis on story, and honestly, there really isn’t much... Read more

WellPlayed

Full of secrets, desolate and still somewhat gorgeous – Siberia might be the home of bloodshed you were missing in Serious Sam 4. All for... Read more

Checkpoint Gaming

Ammunition-fueled ATV trips, Mech piloting sequences and taking down squid-operated choppers levels of insane action can’t save Serious Sam: Siberian Mayhem. No matter how varied... Read more

The Escapist

Gaming Instincts

If there is another Serious Sam, please try to build around the core mechanic, which has always been shooting monsters in the face with insane... Read more

ACG

cublikefoot

Serious Sam: Siberian Mayhem may have some decent gameplay, but the numerous technical issues really bring down the experience – massive frame drops, microstutters, and... Read more

God is a Geek

Serious Sam: Sliberian Mayhem offers the similar carnage and heart-pounding action of its predecessors, with some cool new weapons to boot. Read more

Shacknews

How much fun you’ll have in the bleak, frozen landscape depends on how much you are still smitten with mid-90s first-person shooter mechanics. Serious Sam... Read more

Hardcore Gamer

Serious Sam: Siberian Mayhem is an excellent entry in the long-running series. Read more

GameWatcher

A lean and mean addition to the Serious Sam family that experiments with a few new toys, and offers more of the same Serious Sam... Read more

GameSpew

Inevitably, Serious Sam: Siberian Mayhem doesn’t do much to attract newcomers to the series. It is what it is: an expansion designed to offer Serious... Read more

Saving Content

It’s hard to pinpoint why this expansion just isn’t included into Serious Sam 4 as DLC, because it misses out on varied and complex modding... Read more

The Click

Serious Sam Siberian Mayhem distills the DNA of the series down into a series of long, brutally chaotic levels backed by an all-time peak of... Read more

WhatIfGaming

Serious Sam: Siberian Mayhem is a standalone expansion that takes Sam Stone to the icy land of Siberia. The expansion introduces new weapons, enemies, and... Read more

GameSkinny

Siberian Mayhem keeps the experience fresh while sticking to the roots of what makes Serious Sam so great: ruthless alien-killing action with plenty of puns... Read more

NaviGames

Short, but very intense. Serious Sam: Siberian Mayhem will please all fans of the saga and wild action. Read more

JVL

Serious Sam: Siberian Mayhem is funny because his name is Serious Sam, but that's it. In the end, it brings absolutely nothing to the original... Read more

IGN Italy

As a standalone DLC, Serious Sam: Siberian Mayhem lasts the right amount of time and if you love rude and ignorant run & gun shooters,... Read more

The Games Machine

A new Serious Sam game! And guess what? You get exactly what you'd expect! Siberian Mayhem is a mindless fragfest that does not overstay its... Read more

Hu3br

Although shorter than expected, Siberian Mayhem is packed with amazing fights, mostly great level design and shows some of the strengths of Serious Sam as... Read more

INDIANTVCZ

Serious Sam: Siberian Mayhem delivers what you'd expect from a quality DLC. It offers plenty of content and fun and addresses some of the original's... Read more

Gamerweb.pl

Serious Sam: Siberian Mayhem is a typical example of a shooter that is not for everyone. Read more

Gamefa

If you're a longtime fan of this franchise, rest assured you'll enjoy the title. Read more

SomHráč.sk

Even though Serious Sam: Siberian Mayhem came out of nowhere, it offers exactly what we expect from the series nowadays. Shame about the hardware optimization... Read more

SECTOR.sk

Serious Sam: Siberian Mayhem is another action-packed oldschool shooter with tons of enemies and interesting weaponry. Although the gameplay is good, minor bugs and design... Read more

GameMAG

If you loved the time you spend with original Serious Sam 4, this new expansion can be right up your alley. Read more