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Serious Sam: Siberian Mayhem
Serious Sam: Siberian Mayhem builds its appeal around five varied Siberian levels, new weapons and vehicles, and side missions on Sam’s pursuit of General Brand. At $6.73 from 
Eneba, compare the current outlay with how much you want this self-contained, gun-focused chapter now. The next announced Steam sale window is Dec 17, 2026 – Jan 4, 2027; participation and any discount are not guaranteed. On Steam PC, full controller support and solo, multiplayer and co-op modes give you several ways to approach the fights. This offer is $13.26 below Steam’s current $19.99, a direct same-platform price comparison.
GGselSerious Sam: Siberian Mayhem РФ+СНГ+ВЕСЬ МИР Steam КЛЮЧfrom~ RUB 830.79Credit/Debit CardBuy nowAll-time low ~ $3.48across Steam & third-party stores
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Price History
Past 36 months · Updated dailyHistorical Low~ $4.992026-06Current Low Across Stores~ $6.73Enebavs. Historical Low+35%
Prices cover Steam and 39 authorized stores; only legitimate offers are counted. The chart shows weekly market-wide lows and Steam's official price across the past 36 months.
DLC
01About Serious Sam: Siberian Mayhem
Serious Sam: Siberian Mayhem sends Sam Stone across five levels of Russia, from Arctic shores and forests to abandoned villages and a ghost town. Fight Mental’s Horde with new weapons, gadgets and vehicles, explore the landscape, and take on side missions that reveal stories of the region’s outcasts. The standalone chapter follows Sam’s pursuit of General Brand on the road to Tunguska. Steam PC player rating: 92% positive from 4,784 reviews.
Credits
Developer
Croteam · Timelock Studio
Publisher
Devolver Digital
Lowest recorded in 36 months
$4.992026-06-08 · SteamBase game · same records as the chart above; USD history, not a regional Steam low.Language support
| Language | Interface | Subtitles | Audio |
|---|---|---|---|
| Simplified Chinese | Yes | Yes | — |
| Traditional Chinese | Yes | Yes | — |
| English | Yes | Yes | Yes |
Show 10 more languages
| Language | Interface | Subtitles | Audio |
|---|---|---|---|
| French | Yes | Yes | — |
| Italian | Yes | Yes | — |
| German | Yes | Yes | — |
| Spanish | Yes | Yes | — |
| Japanese | Yes | Yes | — |
| Korean | Yes | Yes | — |
| Polish | Yes | Yes | — |
| Portuguese-Brazil | Yes | Yes | — |
| Russian | Yes | Yes | — |
| Turkish | Yes | Yes | — |
Steam PC edition data · 2026-10-25
02Before you buy
Solo and co-op
Steam PC lists single-player, multiplayer and co-op modes.
Controller
The Steam PC version has full controller support.
Interface languages
Steam PC lists English, Simplified Chinese and Traditional Chinese interfaces. English has full audio; the listed Chinese options have subtitles.
03Frequently asked questions
Where does the story take place?
Sam travels through Siberia, including Arctic coastlines, forests, abandoned villages and a ghost town, while pursuing General Brand.
What can Sam use in combat?
The chapter adds weapons including an AK and the Perun crossbow, as well as new gadgets and vehicles.
Are there optional activities?
Yes. Side missions reveal stories about the outcasts Sam meets, and the landscape contains secrets to discover.
Popular Steam reviews
Native-language selection · 10 reviewsSelected helpful reviews in this language show both recommendations and criticisms. This selection does not represent the overall positive rating; opinions reflect the version reviewed.
RecommendedSteam player
What happened, Sam? Oh well... I will start this by saying, i did enjoy it but it's really short. Yes, i am aware it's just a stand-alone expansion, but still feels like there was so much more potential to it, potential that wasn't put into play. With some side missions and ♥♥♥♥♥♥♥ around on the map i finished it in like 4 hours. If you're not a fan of the series or have some sort of attachment to the SS games, you might want wait for a discount on it. As an 'average winter enjoyer', i really loved the scenery, and i really wish the game had a photo mode, guess i will have to settle with some modding to take some captures from the game. Perun Crossbow is very powerful and satisfying to play with, it was probably my favorite weapon to play the game with (and finish it.. in like.. 4 hours...) The maps are big enough to strafe as much as your heart pleases, and fighting is awesome. Graphics seem slightly improved compared to SS4, BUT, the optimization is not very good. I like the idea of involving 'Tunguska' in the context of an alien invasion, because, in real life, there was a big explosion there in 1908, which sparked some interesting theories, even X-Files made an episode about it. What i am not happy about is that, in Serious Sam 4, there were huge problems with playing the game using DX12 (you'd get lots of annoying visual glitches), i was getting excited that maybe they fixed it in Siberian Mayhem (because trust me, there is a huge difference), but instead, they removed DX12 totally. They also added difficulty and multiplayer achievements again (Again with the ♥♥♥♥-measuring contests!) Cutscenes are too... cutty. Let me rephrase, in many cases there's no transition during dialogues, they're just cut suddenly, feels very amateurish. I'd say the game is good, but i expected some more, and it left me craving for more Sam. Am i happy or disappointed? Yes.Show moreShow less
4.1 hours at review127 people found this helpful
Not recommendedSteam player
Wow, man, this series has really fallen off, hasn't it? To give Timelock Studio some credit, they're definitely better at making these games than Croteam is now, but they've inherited problems that Croteam introduced and it really is a killer. Simply put, Serious Sam was always reliant on conveying every shred of important information you'd need very quickly, both visually and audibly. SS3 was really where things took a turn in both of these, but especially visually. Now we're at the point where it's just impossible to quickly parse all the same information that you could in TFE, TSE, TNE, and SS2. The art direction is so focused on realistic lighting and effects that it obscures the colours and at times even the silhouettes of enemies. I can almost never determine what kind of beheaded I'm looking at (aside from kamikazes) by something as simple as shirt colour anymore. It used to be so stark. Green = grenadier. Red = rocket man. Purple = basic, weak projectile. This isn't helped by the enemy design itself, which likes to mute colours when they should really be popping. You can still have a game that looks good and is readable, as the new Doom games manage that just fine. But in Serious Sam's case especially, with the sheer number of enemies it wants to throw at you, you have to be even more aware of your art direction to inform players. The more enemies on screen, the more information you're tasking the player to process quickly, and this game does not succeed in helping give you that necessary information. The other absolute tragedy is the sound design. Unique enemy sounds aren't as distinctive or well-mixed. In the older games, if there was a Kleer skeleton within half the damn map from you, you'd know many moons before you ever saw it, for instance. Major and minor arachnoids made a passive sound for simply existing, especially good to know in regards to the minor, since it has a hitscan weapon. They also had a sound for detecting you, so you could duck back into cover real quick before it fired. Virtually every enemy had a very distinctive dying sound, so you'd know when that target was no longer an issue without having to watch their dying animation to be sure. Numerous enemies had pain sounds, like all the beheadeds, so you'd know if you stunned them for a brief second. If enemies fired a gun, you would ALWAYS know. You would never, ever be hit by biomechanoid lasers that you weren't aware of having been fired. The reptiloids with their homing projectiles ALWAYS used a very distinct sound for their quick charge animation, then a sound that it'd been released, and then the projectile itself had its own sound so you wouldn't forget it'd been fired. Then, if it exploded after running out of time, you'd hear it and know that projectile wasn't a threat. None of this is here. Or if it is, it's mixed so badly that you can't hear any of it. I even turned off the (unremarkable) music entirely just to try to hear these things better. It didn't help. It's just a weird, vague cacophony of noise that you're subjected to, rather than the intelligent layering of many different and seriously distinct noises, completely unique, to let you know the situation without even needing to see it. Boot up an old Serious Sam game, get into a fight, then close your eyes. You will know absolutely every single enemy in the battle and what they're doing at any given moment without needing to see a thing. Thing is, from what I played, these things didn't even really make the game harder, necessarily, as I didn't die. But as someone who really enjoys the earlier titles, and as someone who disliked SS3 and had no real expectations of this title except that it was better than SS4, I find myself not enjoying it at all and being disappointed by it. And again, I don't really blame Timelock. I blame Croteam. Even just thinking of what I've seen of SS4 and what I played of SS3 years ago, I can tell that anything that actually feels Serious Sam in this game is something Timelock managed to capture on their own. Nonetheless, if Serious Sam is perpetually going to continue leaning in a more realistic direction visually (despite the fact that every new game with realistic art direction is inherently having more problems with readability than games from 20 years ago that tried being realistic), and if the sound design isn't going to be reworked to be on par with a 22 year-old game, then I don't see any Serious Sam game managing to match the accomplishments of its earlier titles. Such a shame.Show moreShow less
1.7 hours at review150 people found this helpful
RecommendedSteam player
Dear Croteam. Please, hire these guys for SS5. Look. I loved SS4. To me, it was a major upgrade over SS3. But this DLC, is an absolute peak. Hell, I could even place it as the third best Serious Sam game, right after TFE and TSE.Show moreShow less
6.4 hours at review117 people found this helpful
Not recommendedSteam player
I cant seem to find the same enjoyment from this game and 4 like I did with the old school games. Not a big fan of the massive open world with emptyness.Show moreShow less
1.6 hours at review96 people found this helpful
RecommendedSteam player
Its more Serious Sam, whats not to like? Pros: New enemies and weapons fit right in. New levels are long - about an hour on averege, with a minimum of 500 enemies each. More tough arenas with interesting mechanics like jump pads, insane vehicle sections. Godly soundtrack. Optimization is better than Sam 4. Interesting secrets to find, like classic throwback levels (and no parkour ones). Unlockable multiplayer characters and weapon skins. Tough achievements that actually pose a challange. Cons: It's over after the last level, and I need more.Show moreShow less
19.5 hours at review79 people found this helpful
Received for free
Not recommendedSteam player
This games had some serious optimization issues. Constant shuddering regardless of what my settings were. Would not buy until they fix optimization issues.Show moreShow less
0.2 hours at review43 people found this helpful
RecommendedSteam player
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0.4 hours at review75 people found this helpful
Not recommendedSteam player
Siberian Mayhem unfortunately gets a negative rating from me. Overall, the gameplay is still solid. Movement, dual wielding and the vehicle sections are all good fun. Bullet spread is still a thing sadly. The new weapons are extremely overpowered, which makes them extremely fun to use. The story is just present enough to give the game a slight nuance in stitching the levels together. Cutscenes are alright, adds some personality to Sam and his merry band of exterminators. The chemistry between the characters is much better in SM than in 4, much less cringey dialogue. The maps are of decent size and the item/enemy/area secrets and traps are very reminiscent of TFE/TSE. You can tell the mod team making SM were much in sync with Golden Era Sam games, and it really shows how Croteam has lost their personal touch. Some more interesting platforming sections would really put the icing on the cake. Of the new enemies, the Octanian Towers do a good job of putting pressure on the player amidst the other fodder, ultimately a pain in the ass to fight. They make the level less enjoyable. The other few additions are decent enough to fight. What prevents this game from being truly good and enjoyable is the performance. It's atrocious. Imagine having to crank every setting to minimal in a Croteam game (Slavic technosorcers that made games run on the most destitute 3rd world systems - and still function fantastically). It seems Alen Ladavec was the programming talent, and that talent has evaporated from Croteam when he left. The first and final levels run horribly - some areas are better than others throughout the game - but overall it's pure trash at maintaining a smooth and respectable framerate. What's astounding is the game looks serviceable; it's not pushing any boundaries as Croteam has unfortunately decided to pursue realism rather than the better stylized art direction in older Sam iterations. It performs much worse than Sam 4, well known for being poorly optimized. I doubt that SM will ever receive optimizations as that seems a fairly difficult task given a small team of modders and Croteam's seemingly apathetic attitude supporting Sam 4 (or Revolutions, or anything at this point). Another detriment is that like Sam 4, this does not have integral 16p coop, though likely will be supported via a mod like the former. This is another flag denoting Croteam losing touch with what made their games so good. Overall, a good attempt by Timelock that hits closer to old Serious Sam than 3 or 4, marred and rendered unenjoyable due to the complete and utter lack of engine optimization. Even 3 ran better than this, FPS-killing dust clouds included. Croteam needs to seriously™ buckle down and make this iteration of Serious Engine actually perform before pushing out Talos 2 or anything else.Show moreShow less
6.3 hours at review34 people found this helpful
RecommendedSteam player
"Sam, you can't stay and kill all of them!" New Objective : Stay and kill all of them. Amazing. Best 10 hours of Serious Sam I've played in YEARS. This was so good. Get it, play it, beat it, do new game+Show moreShow less
9.9 hours at review70 people found this helpful
Not recommendedSteam player
Full video review: https://youtu.be/zLtx1H5jVMw Written review below! What many thought would be DLC actually turned out to be a full-blown standalone expansion, so here’s my quick review for Serious Sam: Siberian Mayhem. Gameplay If you’ve ever played a Serious Sam game before, you know what to expect gameplay-wise. You get a bunch of guns and a bunch of enemies to shoot with those guns, oftentimes in big wide-open areas. Siberian Mayhem is pretty much more of the same with slight additions to this formula. The weapons are plentiful and fun to use, the enemy designs are varied, and there’s a nice sense of challenge behind it all even on normal difficulty. The core to a good Serious Sam game is there and all the bonuses like vehicles, gadgets, and side content to find only add to that. That said, not all of the new content lands. One of the big new enemies, for example, feels like a direct contrast to the run-and-gun nature of the gameplay. It’s called the sentry tower and it’s basically a giant orbital laser / homing missile tower hybrid that you cannot take down like a traditional enemy. Instead, you have to wait for it’s core to open after it finishes an attack cycle and only then can you attack it before it closes again and repeats the process. Whereas most (rather, all) enemies require you to run, jump, and swap around weapons constantly, this enemy requires you to stop, wait, and carefully target a weak spot - it’s a bit too slow for what I would normally expect from a Serious Sam game and easily my least favorite enemy to fight. The new weapons are at least cool though, the crossbow being a personal favorite. Otherwise it’s the same old gameplay. It can get a bit repetitive, but Siberian Mayhem is short enough that it didn’t at least go overboard. It took me just over three hours to clear all five levels - although that’s only with 30% achievement completion. Technical Issues My main complaints are actually with the technical side of things. Because while the gameplay is fine, I had so many smaller issues running the thing that it became rather frustrating. I have a brand new 5800x and 3080 Ti and the game installed on an NVMe drive, but that didn’t stop me from running into numerous massive frame drops, microstutters, and even outright freezes that lasted seconds at a time. I started at the highest settings, but found myself continuously dropping them lower as I played to try to accommodate for these technical issues. I would go from my fps cap of 155 fps all the way to 40 and then back constantly, especially during scenes where tons of enemies were on-screen (which happens a lot given this series). I still managed to clear the game, but I cannot deny that the constant technical issues really brought down the experience. Overall The gameplay is fine (although not without issue), but I cannot in good faith recommend the game given all the technical issues I ran into. I can only imagine how much worse said issues would be on weaker hardware, so this is definitely one to wait for patches on or at least go in with tempered expectations. Follow my Steam Curator Page for more reviews + videos!Show moreShow less
3.6 hours at review34 people found this helpful
Received for free
Source: original Steam user reviews. Helpful votes are an archived snapshot, not live data. Last collected: 08/15/2026.