Navigate to %UserProfile%\Documents\My Games\Serious Sam 3\ and open GameSettings.ini . Under [Network] , add:
This method may work with the newer , which includes Serious Sam 3, but I'll focus on the standalone game as it's what most players will have.
If you are running a completely DRM-free version of the game (such as the GOG release or a backup) and the built-in network menu demands a Steam connection, you can use a legal Steamworks emulator like the Goldberg Emulator. This replaces the network communication layer to simulate Steam locally over LAN. Step 1: Download the Emulator how to play serious sam 3 multiplayer lan without steam
Copy the entire Serious Sam 3 folder (including the SSE files) to every LAN client. They do not need Steam installed at all.
: All other players log into that same network using the network ID and password. This replaces the network communication layer to simulate
Most emulators use a simple text configuration file to assign player names and prevent network conflicts.
: Open SmartSteamEmu.ini and set AppId = 41070 . Point the Target path to your Sam3.exe . : All other players log into that same
Locate the Target line and point it to your Serious Sam 3 executable path (e.g., Target = C:\Games\Serious Sam 3\Bin\Sam3.exe ).
