How To Play Serious Sam 3 Multiplayer Lan Without: Steam Repack

How to play Serious Sam 3 multiplayer over LAN without Steam

Follow these steps to set up a local multiplayer session of Serious Sam 3: BFE on a LAN without using Steam. This guide assumes each PC already has the game installed and running (retail, DRM-free, or installed from a non‑Steam copy).

  • Go to Windows Control Panel > System and Security > Windows Defender Firewall.
  • Click "Allow an app or feature through Windows Defender Firewall".
  • Find Sam3.exe and ensure both Private and Public boxes are checked.

Select the game and join.

  1. Locate the executable: Go to your Steam library, right-click Serious Sam 3 → Manage → Browse local files. Navigate to Bin/ folder.
  2. Create a shortcut: Right-click SeriousSam3.exe → Send to → Desktop (create shortcut).
  3. Add launch parameter: Right-click the new shortcut → Properties. In the “Target” field, add a space and then:
    -skip
    Full example: "C:\Program Files (x86)\Steam\steamapps\common\Serious Sam 3\Bin\SeriousSam3.exe" -skip
  4. Disable Steam overlay (optional but recommended): In Steam settings → In-Game → uncheck “Enable Steam Overlay”.
  5. Launch from the shortcut: Do NOT launch via Steam library. The -skip parameter bypasses Steam authentication for LAN sessions.

Virtual LAN (Optional): If you are not in the same physical room, use a Virtual LAN tool like Radmin VPN or Zerotier to simulate a local network over the internet. how to play serious sam 3 multiplayer lan without steam