Rename or delete steam_api.dll in the Bin folder. The game will fall back to a LAN-only mode (works on version 1.0 only).

| Problem | Solution | |---------|----------| | Server not visible in LAN list | Use and type host IP directly | | Connection timeout | Disable firewall / antivirus | | Version mismatch | Copy the entire game folder from one working PC to others | | “Steam must be running” error | Use the Steamless .exe or run Steam in Offline Mode before launching | | Lag / stutter | Lower network settings in game; use wired LAN |

Ensure ports 27015 and 27016 are open if you are using a dedicated server.

How To Play Serious Sam 3 Multiplayer Lan Without Steam Hot Upd ✔

Rename or delete steam_api.dll in the Bin folder. The game will fall back to a LAN-only mode (works on version 1.0 only).

| Problem | Solution | |---------|----------| | Server not visible in LAN list | Use and type host IP directly | | Connection timeout | Disable firewall / antivirus | | Version mismatch | Copy the entire game folder from one working PC to others | | “Steam must be running” error | Use the Steamless .exe or run Steam in Offline Mode before launching | | Lag / stutter | Lower network settings in game; use wired LAN |

Ensure ports 27015 and 27016 are open if you are using a dedicated server.

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