Portal 2 is a puzzle-platform game in which we have to solve puzzles with portals, it is a game for those who likes sandbox/puzzle games, In this tutorial I will tell you how to play Portal 2 for free on LAN Multiplayer using RadminVPN with teammates.

Setup

Step 1 Download & Install Portal 2 For Free Here, or the Steam Version.

Step 2 Run the game and check both boxes and press Allow Access if it pops up:

Step 3 After the game has launched, Enable the developer console in Options > Keyboard/Mouse.


Step 4 Press the tilde button on the keyboard while on the Main menu:

Connection for Multiplayer

Step 1 Everybody who want to play need to install Radmin
VPN

Step 2 Create your Network by clicking on a "Create Network". Set up Network name and Password

Step 3 Share network name and password with your teammates.

Step 4 Your friends need to join your network by clicking on a "Join Network" in Radmin VPN.

How To Host Game

Step 1 After opening console type "map mp_coop_start" ("map <Map Name>") and click on "Submit".


Step 2 Wait for the game to load up and get to this screen.


Step 3 After you reach this screen, tell your friends your RadminVPN IP (starts with 26..) and wait for them so they can join.

Step 4 Enjoy The Game

How To Join Game

Do all the steps in the Setup section of this article

Step 1 After opening console type "connect <YourPartnerRadminVPNIP>" (For Example "connect 26.250.164.2") and click on "Submit"

Step 2 After connecting complete the in-game tutorial (How to play Portal 2) with your partner. (For example, It will tell you how to ping and what to do using Ping Tool as told in the screenshot):


Step 3 Enjoy The Game

F.A.Q

Question 1 I keep getting "Connection to game server failed."


Ans: Make sure your partner has RadminVPN on and can ping each other, if you can ping your friend then recheck the IP you entered. If you still can't connect try disabling the firewall by following these steps:

1. Open Control Panel.
   
2. Select System and Security.
   
3. Choose Windows Firewall.
   
4. Select Turn Windows Firewall on or off on the left side of the screen.
   
5. Select the bubble next to Turn off Windows Firewall.
   
6. Select OK to save the changes.
   

Question 2 Is Giving My RadminVPN IP To A Random Person Safe?

Ans: Yes, it is safe to give your RadminVPN IP to random person, He can just join with it, but giving your public IP is not safe. (Your Router IP)

Question 3 I Am Still Having Errors...

Ans: Make sure you have done all the steps in -Setup-, Also try disabling firewall.