Host Multiplayer Game
Step 1: Install Radmin VPN and create a network Download and install Radmin VPN. In the main Radmin VPN window, click "Create Network".
Enter the network name, password and click "Create".
Step 2: Ask your friends to join the network
Send your friends the name of the Radmin VPN network and the password to join to this network.
Step 3: Add the game to the firewall exceptions
You need to add rules to the firewall. Open Radmin VPN -> System -> Firewall Exceptions and add Portal 2 (portal2.exe) to the exceptions.
Step 4: Install Portal 2: Multiplayer Mod Install
Portal 2: Multiplayer Mod (Mod for Windows is only supported on 64-bit versions of Windows 10 and Windows 11). This mod aims to get 33 players inside of a single multiplayer match in Portal 2.
Step 5: Create game Launch p2mm-2.2.1.exe. Click "Start Game". Wait for the other participants.
Join Multiplayer Game
Step 1: Install Radmin VPN and connect to the network Download and install Radmin VPN. In the main Radmin VPN window, click "Join Network". Enter the Network Name and Password and click "Join".
Make sure you and your friends are on the same network.
Step 2: Run Portal 2 Step 3: Add the game to the firewall exceptions You need to add rules to the firewall. Open Radmin VPN -> System -> Firewall Exceptions and add Portal 2 (portal2.exe) to the exceptions.
Step 4: Join the game Go to the game main menu. Click "Options".
Click "Keyboard/Mouse".
Find "Allow Developer Console" option and set it to "Enabled".
Press "~" button to start the console. Type in the console "connect " and game server IP address (for example: "connect 26.12.125.71").
