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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
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”( You have
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The offer from Eneba in KEY format for 4.68€ is currently the cheapest
Buying at Eneba saves you 69% compared to the official store
Most users have had positive experiences buying at Cdkeys Com4.8(194k) which has an offer with a price of 6.79€
At Gocdkeys our recommendation is to always buy the KEY format, preferably from Instantgaming due to its reliability. If you prefer the account format, which is cheaper, we recommend buying from Difmark.
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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 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.
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.
| Release date | 01/26/2022 |
| Users rating |
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| Steam comments |
Very Positive
Very Positive
(4043
Comments)
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Player Rating
Critics Rating
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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