Buy Serious Sam: Siberian Mayhem PC Key

★ ★ ★ ★ ★

Looking for a cheap Serious Sam: Siberian Mayhem key? As of 7 Nov 2026 the cheapest key costs $6.47 at Difmark. We compare 24 offers from 19 stores, spanning $6.47 to $21.78. In keyshops the lowest price is $6.47, in official stores it starts at $9.99. With this many sellers the gap between the extremes is often several times over, so picking the store matters more here than waiting for a sale. This game has been cheaper before, on 76% of the days we have data for. A price alert will let you know when the next drop comes. On PC you buy a key that you activate in Steam or another client, and this is the widest market we track, with more than a quarter of games carrying a keyshop offer.

Metacritic:
70 7.7
Steam:
Very Positive (4k)
Buy in Official Store:
-50%
$9.99
Buy in Keyshops:
-67%
$6.47
See price history

Official Stores (7)

DRM:
Gamesplanet US
Serious Sam: Siberian Mayhem
Windows
+1
2d ago
DRM:
Steam
Gamesplanet US
$19.99 $9.99
-50%
Gamesplanet FR
Serious Sam: Siberian Mayhem
Windows
+1
18h ago
DRM:
Steam
Gamesplanet FR
$21.90 ~$11.22
-48%
Gamesplanet DE
Serious Sam: Siberian Mayhem
Windows
+1
18h ago
DRM:
Steam
Gamesplanet DE
$21.90 ~$11.22
-48%
Gamesplanet UK
Serious Sam: Siberian Mayhem
Windows
+1
18h ago
DRM:
Steam
Gamesplanet UK
$22.55 ~$11.31
-49%
GOG.com
Serious Sam: Siberian Mayhem
Windows
+1
1d ago
DRM:
GOG
GOG.com
$19.99
Steam
Serious Sam: Siberian Mayhem
Windows
+1
3w ago
DRM:
Steam
Steam
$19.99
Microsoft Store
Serious Sam: Siberian Mayhem
Windows
+1
16w ago
DRM:
Microsoft Store
Microsoft Store
$19.99

Keyshops (17)

Account offers:
DRM:
Steam
Steam
Difmark
Serious Sam: Siberian Mayhem (PC)
Windows
+1
9h ago
DRM:
Steam
Difmark
$19.99 ~$6.47
-67%
-15% with XDDEALScopy
-15% with XDDEALScopy
GAMIVO
Serious Sam: Siberian Mayhem Global (Steam)
Windows
+1
51m ago
DRM:
Steam
GAMIVO
$19.99 ~$6.68
-66%
-9% with XDDealscopy
-9% with XDDealscopy
Instant Gaming
Serious Sam: Siberian Mayhem
Windows
+1
10h ago
DRM:
Steam
Instant Gaming
$22.44 ~$6.85
-69%
Serious Sam: Siberian Mayhem (PC) Steam Key GLOBAL
★ 5.0
Windows
+1
3h ago
DRM:
Steam
Eneba
$21.78 ~$6.89
-68%
-10% with XDD10copy
-10% with XDD10copy
Loaded
Serious Sam: Siberian Mayhem PC
Windows
+1
1d ago
DRM:
Steam
Loaded
$19.99 $6.89
-65%
K4G
Serious Sam: Siberian Mayhem Steam CD Key
Windows
+1
5h ago
DRM:
Steam
K4G
$19.99 ~$6.94
-65%
-14% with AKS14DEALcopy
-14% with AKS14DEALcopy
G2Play
Serious Sam: Siberian Mayhem PC Steam CD Key
Windows
+1
55m ago
DRM:
Steam
G2Play
$21.78 ~$6.96
-68%
-8% with XD8DEALScopy
-8% with XD8DEALScopy

About Serious Sam: Siberian Mayhem

Serious Sam: Siberian Mayhem - about the game

Serious Sam: Siberian Mayhem is a first-person shooter that expands the classic Serious Sam formula with a self-contained story set in the frozen expanses of Russia. Players control Sam Stone as he pursues the traitorous General Brand through five distinct levels filled with combat against Mental's Horde and opportunities for exploration across Arctic coastlines, forests, villages, and a ghost town.

Gameplay

The core loop centers on fast-paced shooting against waves of enemies while navigating large, open environments that encourage both direct confrontation and optional detours. New weapons include the AK rifle and the experimental Perun crossbow, which add variety to the arsenal alongside vehicles and gadgets for different approaches to combat. Side missions introduce new characters who assist Sam and reveal additional details about the region, while secrets scattered throughout the levels reward thorough searching with useful or unusual items.

Combat emphasizes mobility and firepower against tougher foes and bosses tailored to the Siberian setting. The environments support extended play sessions, allowing players to engage enemies at their own pace or push forward through the main objectives. Exploration integrates with the action, as the world itself contains clues and stories that unfold through careful observation.

Game Modes

The experience revolves around a linear campaign structured across five levels, each offering a mix of story progression, combat encounters, and side content. There are no separate competitive or survival modes confirmed beyond the main journey, which blends shooting sequences with opportunities to complete optional tasks for new characters and hidden elements.

Progression focuses on advancing through the narrative while tackling challenges in sequence, with the ability to revisit areas for missed secrets or additional encounters. This structure keeps the focus on single-player progression without branching into multiplayer formats.

Story and Setting

The plot follows Sam as he tracks General Brand across Siberia, uncovering forgotten stories and unexpected allies along the way. The setting draws from real Russian landscapes reimagined as hostile territory, complete with abandoned settlements and harsh weather that influences navigation and enemy behavior.

New outcasts and characters join the cast to provide assistance and context, expanding on the series' lore through side content rather than altering the central quest. The narrative builds on prior events but stands alone as a complete chapter.

Is It Worth Playing?

Serious Sam: Siberian Mayhem delivers the series' signature horde combat in a new environment with added exploration and side activities. It suits players who enjoy methodical shooting against large enemy groups and appreciate the freedom to explore between fights. The game launched in early 2022 and remains available on PC with ongoing support through patches.

Reception has been mixed among critics, reflecting both the strengths of the combat and some limitations in pacing or variety compared to expectations. Those familiar with earlier entries will find familiar mechanics enhanced by new weapons, enemies, and a larger sense of scale in the levels. Newcomers may appreciate the self-contained story and the option to tackle content at a deliberate pace.

Interface:
GermanEnglishSpanish - SpainFrenchItalianJapaneseKoreanPolishPortuguese - BrazilRussianTurkishSimplified ChineseTraditional Chinese
Audio:
English
Subtitles:
GermanEnglishSpanish - SpainFrenchItalianJapaneseKoreanPolishPortuguese - BrazilRussianTurkishSimplified ChineseTraditional Chinese

Age rating

Unavailable
Metacritic:
70 7.7
Steam:
Very Positive (4k)

Minimum:

  • OS: Windows 10 64-bit
  • Processor: 4-core CPU @ 2.5 GHz
  • Memory: 8 GB RAM
  • Graphics: nVidia GeForce 780/970/1050 or AMD Radeon 7950/280/470 (3 GB VRAM)
  • DirectX: Version 11
  • Storage: 25 GB available space
  • Additional Notes: Requirements are based on 720p rendering resolution at 30 FPS

Recommended:

  • OS: Windows 10 64-bit (1909)
  • Processor: 8-core CPU @ 3.3 GHz
  • Memory: 16 GB RAM
  • Graphics: nVidia GeForce 1080/2060 or AMD Radeon Vega64/5700 (8 GB VRAM)
  • DirectX: Version 11
  • Storage: 25 GB available space
Historical low
Price history from official stores
$4.99
Steam
1 months ago
Price history from keyshops
$5.20
Eneba
7 months ago

FAQ

9 questions

Before you start looking for a cheap Serious Sam: Siberian Mayhem PC key, check the essentials. Developed by Croteam. Published by Devolver Digital. PC released date: 25 Jan 2022. Genres: Action, Adventure. Categories: Multi-player, Family Sharing, Co-op, Steam Trading Cards, Steam Workshop, Single-player, Steam Achievements, Full controller support, Steam Cloud, Includes level editor, Online Co-op.

Q

Where to buy a cheap Serious Sam: Siberian Mayhem Steam key or CD key?

Using our price comparison and verified discount codes, you can buy a Serious Sam: Siberian Mayhem key for as low as $6.47. This deal is available at Difmark and is among the cheapest offers on the market. All keys listed on XD.deals are delivered digitally and eligible for instant download after payment. Prices already include processing fees and applied promo codes, so you always see the lowest Serious Sam: Siberian Mayhem price on PC. Check the Serious Sam: Siberian Mayhem price history to buy at the best moment.

As of our last update (we refresh Steam pricing multiple times a day), the Serious Sam: Siberian Mayhem Steam price is $19.99.

Our price tracker covers both official retailers and key marketplaces, so you can find Serious Sam: Siberian Mayhem on sale even outside seasonal promotions. We currently detect 24 active offers from official stores and keyshops. Check the table above, compare against the historical low, and set an alert so you never miss the next price drop.

Based on our data, Serious Sam: Siberian Mayhem is not currently available on GeForce NOW. You will need to run it locally on your PC. Browse games available on GeForce NOW.

We have recorded offers from 21 stores in total, and from 4 in the most recent reading. On days when both store types carried the game, the keyshop was cheaper by a median of 66%. The cheapest offer came most often from Eneba: 121 of 280 days with data. The price reached its historical low on only 1 day out of 280 days with data.

Yes. Serious Sam: Siberian Mayhem has an official page on the Steam Store. You can also buy a Serious Sam: Siberian Mayhem Steam key from third-party sellers. Our price comparison currently includes 22 offers with Steam DRM. Pick one to ensure your Serious Sam: Siberian Mayhem download happens on Valve's platform.

Yes, with minor tweaks. Serious Sam: Siberian Mayhem is Steam Deck Playable - it works after small adjustments like selecting a Proton version or using the touchscreen for tiny launcher text. You can play Serious Sam: Siberian Mayhem on Steam Deck.

According to our data Serious Sam: Siberian Mayhem is not currently available on PC Game Pass, EA Play or Ubisoft+. We are still filling in the catalogues of these services, so it is worth confirming the status at the source before you decide. If you are buying, XD.deals will help you find the lowest price.

No - XD.deals is not a store. We are a price-comparison service that tracks the best Serious Sam: Siberian Mayhem deals across official stores and verified keyshops. Click "Go to Store" next to any offer and you will be redirected to the retailer's website to complete your purchase.

Best prices for Serious Sam: Siberian Mayhem

1 Difmark Difmark Keyshop
-67% $6.47
2 GAMIVO GAMIVO Keyshop
-66% $6.68
-69% $6.85
4 Eneba Eneba Keyshop
-68% $6.89
5 Loaded Loaded Keyshop
-65% $6.89

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