- Launch the game and select Multiplayer.
- At this point, you might receive a notification regarding a CD Key. Please ignore and close it.
- Then, select Local Network.
- Once in the Local Network mode, you can either create a server or join one.
To create a server, simply click on Create Server and choose your preferred settings.
To join a server, either select a server in the list or click on Connect to IP. After adding the IP Address of the server, his port and the optional password (provided by another player), you should be able to play together. To find your PC address IP, please have a look at this official Microsoft article.
Please note that it will only work if both users are connected on the same network.