Type the following command to start a cooperative map (replace map_name with the actual internal map name, such as 01_SummerInCairo for the first level): cht_bEnableCheats=1 (Note: Enrolling commands sometimes requires cheats enabled on older engine builds, though standard networking commands might not). Type the hosting command: sam_bMultiplayer=1
What (Windows 10, Windows 11, Linux) are the PCs running? Share public link
All computers must be connected to the same switch, router, or ad-hoc network. how to play serious sam 3 multiplayer lan without steam
Select or LAN Game ( do not select 'Online' or 'Xbox Live/Steam'). Click Create Game .
Method B: Using a Steam LAN Emulator (Goldberg / SmartSteamEmu) Type the following command to start a cooperative
: On the client computer, open the console and type: gam_strConnectToIP = "192.168.1.XX:27016" followed by: gamStart() (Note: The default port for SS3 is typically 27016 or 27015 ). Option 3: Local Split-Screen (No Network Required)
Choose your desired game mode: (Campaign) or Versus (Deathmatch). Select or LAN Game ( do not select
Navigate to your Serious Sam 3 installation folder. Look inside the Bin or Bin/x64 directory.
On the host computer, press Windows Key + R , type cmd , and press Enter. Type ipconfig and press Enter.
For legal users, an alternative is to put Steam in Offline Mode and launch the game normally – but the "no Steam" requirement means using a Steamless .exe.