Serious Sam: Siberian Mayhem

Serious Sam: Siberian Mayhem

Croteam · January 25, 2022 · Boomer Shooter, Action, Adventure, Shooter, First-Person

Buy the Serious Sam: Siberian Mayhem key for Steam from Driffle INC at $6.02 — the cheapest of 14 stores we compare.

PC
Very Positive92% · 5,26570Metacritic42playing now
Best price 51 Good deal
$6.02-70%
lowest tracked $3.48
Driffle INC Buy at Driffle INC

Prices last checked

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Where to buy Serious Sam: Siberian Mayhem — official stores

Steam
Steam
Standard Edition · Steam
$19.99
Buy
Newegg
Newegg
Standard Edition · Steam
$19.99
Buy
Humble Store
Humble Store
Standard Edition · Steam
$19.99
Buy
GOG
GOG
Standard Edition · DRM-Free
$19.99
Buy
Nuuvem
Nuuvem
Standard Edition · Steam
$19.99
Buy
Fanatical
Standard Edition · Steam
$19.99
Buy
Gamesplanet
Standard Edition · Steam
$19.99
Buy

Cheapest Serious Sam: Siberian Mayhem keys — keyshops

Keyshops are third-party marketplaces — keys are resold and can be region-locked or a different edition. Check the listing's region & edition before buying.

Driffle INC
Standard Edition · Steam
$6.02
Buy
GAMIVO
Standard Edition · Steam
$6.27
Buy
Eneba
Standard Edition · Steam
$6.35
Buy
Gameseal
Standard Edition · Steam
$6.55
Buy
Kinguin
Standard Edition · Steam
$6.56
Buy
Loaded
Standard Edition · Steam
-70%
$6.89
$22.69
Buy
CJS CD Keys
CJS CD Keys
Standard Edition · Steam
$7.15
Buy

Some store links are affiliate links — playze may earn a commission at no extra cost to you. It never changes the price you pay, and the cheapest confirmed price is always shown in the Best price box above.

Serious Sam: Siberian Mayhem price by region

Serious Sam: Siberian Mayhem costs £4.55 in the United Kingdom, €5.45 in Europe (EUR), $6.02 in the United States, $6.02 in Georgia (USD), CA$22.79 in Canada, zł24.00 in Poland, A$28.95 in Australia, NZ$28.99 in New Zealand and R$33.98 in Brazil right now.

Cheapest Serious Sam: Siberian Mayhem offer in each region, in local currency
RegionBest priceOfficial storeKey shopStores
United Kingdom £4.55 −73% £16.75 £4.55 8
Europe (EUR) €5.45 −72% €19.50 €5.45 11
United Statesyour region $6.02 −70% $19.99 $6.02 14
Georgia (USD) $6.02 −54% $12.99 $6.02 13
Canada CA$22.79 CA$22.79 — 10
Poland zł24.00 −70% zł79.67 zł24.00 9
Australia A$28.95 A$28.95 — 9
New Zealand NZ$28.99 NZ$28.99 — 7
Brazil R$33.98 −32% R$49.99 R$33.98 9

Each row is a real price from that region's own stores, not a currency conversion, so the figures are not directly comparable. Switch regions in the header to shop the one you buy in.

Screenshots

About Serious Sam: Siberian Mayhem

✦ AI summary

Blast through vast Siberian landscapes hunting down the traitorous General Brand while battling Mental's alien horde with a brutal arsenal of new weapons and vehicles. This standalone Serious Sam chapter expands the series with five sprawling levels packed with side missions, mysterious secrets, and a cast of new characters that add unexpected depth to Sam's guns-blazing adventure.

Serious Sam: Siberian Mayhem is a new stand-alone expansion to the world of the classic FPS series. Join the fight against Notorious Mental on a journey through the wild lands of Russia, and find your way through this lost chapter of Sam Stone's adventures.

Serious Sam: Siberian Mayhem — game info

Platforms
Windows
Steam Deck
Playable
Player modes
Single-player, Online co-op
Controller
Full controller support
PC Game Pass
Not included

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

✦ AI summary

Serious Sam: Siberian Mayhem is praised by players for its engaging encounter design, satisfying weapon mechanics, and excellent New Game+ mode that successfully revitalize the classic Serious Sam formula after some recent underwhelming entries. However, some players note optimization issues particularly with Nvidia GPUs, and feel the relatively short campaign and straightforward gameplay may not justify a full price purchase. Most reviewers recommend playing on the highest difficulty for the intended experience.

Recommended Sep 24, 2026
this game is seriously good
7 found this helpful
Recommended Oct 1, 2026
must play
Recommended Sep 29, 2026
Unbelievably good. Proves that with the right encounter design, and some small (but far-reaching) tweaks to weaponry, the Sam formula still rocks. Also: NG+ is really good and has had actual thought put into it. Just a joy to play this after a couple of slightly underwhelming mainline entries. Optimization is slick on my aging PC too; runs like a charm. (Crank the difficulty to max for the true 'Serious' experience :)
Recommended Sep 27, 2026
First, the most crucial point, which must be obligatory underlined is that Serious Sam is a seriously serious game. Okay, there it is - minor part of the review.... 1. Graphics of the game are not magnificent or stunning, they are rather good and decent. It is worth keeping in mind the fact this game is from 2022. 2. Mechanics of the game are simple. The player does not need to use a lot of keys at once. It is definitely an advantage if you are looking around for clear and straight character movement. 3. The campaign is not complex as well. It is built up from several (If I remember correctly - 5) missions. Despite the small number of levels, they are tremendous. 4. The plot is linear as it should be in that type of game. The storyline is full of sarcasm and hilarious sense of humor, which can quickly enchant the player. Fights are full of guts and blood. The simple gameplay, blood and violcence everywhere is the hallmark of this game, which has been polished perfectly. Moreover special weapons and common sarcasm spice up the game splendidly. While the story is ongoing, the player is dismembering every soldier of foes army. To consider everything, the review is positive. …
Not recommended Sep 26, 2026
I played this game on 4k, maxed out with 9070xt, avg fps 120, I played it again with RTX3070 on 1080p everything set to lowest and got avg of 95fps, so this game does not work almost at all on nvidia GPUs and I no longer have AMD gpu to play it on, also with nvidia even with 95fps the game still feels like 30fps, I also have 1080ti but to lazy to test it out it would probably have +/- 5% same performance as 3070.
Recommended Sep 20, 2026
feels like a raw game, not bad but not for full price

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