Split-screen on PC

Serious Sam: Siberian Mayhem

Up to 4 players on one PC, with controllers.

4Verified handler

Handler “Serious Sam Siberian Mayhem” by Genjuro_Kibagami, version 3

What works

With Nucleus Co-op, up to 4 players can play Serious Sam: Siberian Mayhem together on one PC, each in their own part of the screen, with controllers. The free community handler “Serious Sam Siberian Mayhem” by Genjuro_Kibagami does the setup and was checked by hub moderators: version 3, updated 4 Jan 2024. Serious Sam: Siberian Mayhem is a shooter and adventure game from 2022.

Players4
ControllersSupported
Keyboard and mouseNot supported
Several keyboards and miceNot supported
Hub moderatorsVerified

How to play Serious Sam: Siberian Mayhem split screen on PC

Get Nucleus Co-op
Download Nucleus Co-op, free for Windows 10 and 11, and unzip it into its own folder, for example C:\NucleusCo-op. There is no installer.
Keep it out of Program Files, your user folder and OneDrive.
Download Nucleus Co-op
Install the Serious Sam: Siberian Mayhem handler
In Nucleus Co-op, search the Hub for Serious Sam: Siberian Mayhem and install its handler, or download the handler file from this page and drop it on the Nucleus window. Then show Nucleus where Serious Sam: Siberian Mayhem is installed.
Download the handler file (.nc)
Take a seat
Each player presses a button on their own controller to join and takes a spot on the screen. Pick a layout that fits your players.
Launch and connect
Press Launch: Nucleus opens one copy of Serious Sam: Siberian Mayhem per player and lays the windows out on your screen. Then link them in game, usually one player hosts a LAN or online session and the others join it. The handler notes say how.

What you need

A Windows 10 or 11 PC
Nucleus Co-op runs on Windows only. System requirements
Serious Sam: Siberian Mayhem for Windows
Installed on that PC. Nucleus starts every player's window from that one install.
Nucleus Co-op, free
With .NET Framework 4.7.2 or later and the Visual C++ 2015–2022 runtimes (x86 and x64). Download
Something to play with
One controller per player: Xbox, PlayStation or generic pads. Controllers
A PC that can run 4 copies
Each player runs their own copy of Serious Sam: Siberian Mayhem, so the PC carries several times the usual load. Lower the graphics settings if it struggles. Performance tips
A multiplayer mode
Nucleus links the windows through the game's own LAN or online mode; the handler takes care of it.

Handler notes

Gamepads only, your saves per instance are inside Nucleus content folder in the game instances folders (Userdata folder), so be careful about not deleting them.

About Serious Sam: Siberian Mayhem

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.

Summary from IGDB