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. Sam is 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. You can smash through the Russian Tundra with friends in 4-player online co-op mode!
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!

The title is headed to PC on 25th January 2022. You can now pre-order it on Steam and get a 10% discount as well. If you have Serious Sam 4, you can get a higher discount by buying it as a bundle 20%.
SYSTEM REQUIREMENTS
To play the game on PC, you need the following specifications
MINIMUM: | RECOMMENDED: |
Requires a 64-bit processor and operating system 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 | Requires a 64-bit processor and operating system 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 |
Additional Notes: Requirements are based on 720p rendering resolution at 30 FPS
MATURE CONTENT DESCRIPTION
The developers describe the content like this:
Serious Sam: Siberian Mayhem contains frequent violence, blood and gore with some mature language, which can be seen through actual gameplay and cut-scenes Below.