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How to Create a Multi-Player Game With G-Mod

G-Mod, or "Garry's Mod," is a sandbox-style computer game that runs on the Source physics engine. Players are allowed to create and manipulate objects from the "Half Life 2" games, as well as other Valve products. G-Mod has a single player and multiplayer mode. In multiplayer, players can work together, creating and sharing items to create much larger and interactive environments. If you create your own G-Mod server, you will have the ability to invite others to your server or remove them if you desire.

Instructions

- 1
  Load G-Mod through the game client Steam; you will be taken to the game's main menu.
- 2
  Click "Create Multiplayer" to launch your own game server. Choose the server options in the dialog box that appears, and click "Launch" to start your server.
- 3
  Press "Alt" plus "Tab" to go back to the Steam client. Open your friends list, and right-click the name of the friend; select "Invite Friend" to invite them to your server. If your friends can not join your server, continue.
- 4
  Shut down your G-Mod server, and type your IP address in your web browser to open your router configuration. You can find your IP address by typing "ipconfig" in the "Command Prompt" window.
- 5
  Click the "Port Forwarding" tab in your router configuration; you should see several rows of empty boxes.
- 6
  Open the G-Mod ports by typing in these configurations of Protocol:
  
  Inbound, Outbound, each in a separate row; "UDP: 1200, 1200," "UDP: 26901, 26901," "UDP: 27000, 27015," "TCP: 27020, 27039," "UDP: 27015, 27015," "UDP: 27020, 27020" and "TCP: 27015, 27015".
- 7
  Save the new "Port Forwarding" settings, and close your router configuration. Relaunch your G-Mod server to begin playing multiplayer.

Computer Games