Serious Sam: Siberian Mayhem
Updated v1.07
Updated February 12, 2026 8:18 am (4 months ago)
Serious Sam: Siberian Mayhem is a standalone first-person shooter that delivers the series' signature over-the-top action in a frozen Siberian setting. Fight through relentless hordes of alien enemies using an arsenal of absurdly powerful weapons, from double-barreled shotguns to rocket launchers. Explore expansive snowy landscapes, uncover hidden secrets, and take on massive bosses in chaotic firefights that never let up.
Serious Sam: Siberian Mayhem overview
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?
Will this game run on your PC?
Minimum
- System: 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
- System: 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
Download, Install, and Play
- Click the download button to get the link. You’ll be redirected to our link generator.
- Once you’re there, you can either copy the link or open it directly.
- Before you begin, make sure you have a supported client installed.
- Download Serious Sam: Siberian Mayhem v1.07 (latest). Wait until it is 100% complete, then locate the files.
- Install the game:
- Run or double-click
setup_********.exe. - If a DLC folder is included, run any
.exefiles inside it as well.
- Run or double-click
- After the installation is complete, launch the game and start playing.
- Enjoyed the game? Consider purchasing it from the official store to support the developers.
Need help?
Check our FAQs for common questions and fixes. If you need additional assistance, you can also visit the official GOG Support Center.
