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How to play Public Multiplayer on Portal

By siobhan

Hello Portal Fans!
Apparently you can play multiplayer as seen on YouTube. You can do the same thing in other singleplayer games such as Half Life 2.
This guide shows you how you can play on public multiplayer servers or multiplayer with your friends.

Award

Created by

siobhan
Online

Category: Co-op, Modding or Configuration, Multiplayer

Languages: English

Posted

Updated

Apr 14, 2020 @ 3:48pm

Dec 29, 2022 @ 7:47pm

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117	Current Favorites

Guide Index

Overview

Getting Started

Instructions

The End

Comments

Getting Started

Why multiplayer

Multiplayer mechanics are hidden in singleplayer Source 1 games, and you can play cooperative with players online.
The Server Browser is still on Singleplayer games, as it is left over code from Multiplayer. This guide will show you how you can play cooperative or deathmatch in Portal 1.

Developer Console

This is a important part and you need it enabled to do the instructions.

Enabling Developer Console

Open up portal, go to options, keyboard, and then Advanced.
Check the box that says "Enable Developer Console". Apply the new settings.

The bind for console

You need to find the key for opening console, which can be found in Keyboard Options.
Press the "`" key, and enter this command:

gamemenucommand openserverbrowser

and press Submit, or just press Enter.

This will open the multiplayer server browser. If a server is online, connect to one.
The game will automatically slowly download the required map if it's custom.

Bugs

There are some bugs involving the Portal Gun in multiplayer.

The Portal Gun crashes the game in multiplayer. You can use it as a gravity gun. Thanks to a steam deck update, this has been since fixed. Thanks Valve!
Using the SMG1 Grenade can crash the server if you're fighting against NPCs
When a player dies, all player's screens temporarily turn grey.

Instructions

How to make a server

This is a interesting one. If there isn't any servers online, you can quickly create a server using console.
To create a server, open up Developer Console, if you are in a background map, type the command

disconnect

. After that, type in console

maxplayers 32

to enable multiplayer.
and then you have to change the server name.
Type in console:

hostname *server name here*

You can enter any server name you want.
After that, you can set the server's map. Type in console

map mapname

Remember, you can type any map name you want.
After setting the map, doing this command will make the server be seen in the server browser.

heartbeat

What ever you do, DO NOT USE THE PORTAL GUN. IT CRASHES IN MULTIPLAYER.
If you want it to be public, make sure you port forward the port: 27015.
If you don't know how, you can watch an tutorial on youtube.

NPC Bugs

Vortigaunts can crash the game when they use their attack. This may be due to missing particles.
All NPCs have no sound. This can be fixed by customizing the game.
In Multiplayer: Most of the time, NPCs don't have relationships with any other npcs or the player.

The End

Hope you enjoyed this guide! If you liked it please give it a like. If you have any problems please let me know! Thanks.

34 Comments

< >

siobhan [author] Sep 3, 2024 @ 6:47am

i should disable comments

Jxiioxic Sep 3, 2024 @ 6:42am

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