Once you have mastered the Single Player campaign, you may seek a mightier challenge than any computer AI can offer. Then you will turn to multiplayer, where you will enjoy the greatest joy of Europa Universalis IV: to crush your online enemies, to drive them before you in a rain of fire, and hear the lamentations of their women.
And this is just the place to do it! From this interface, you can offer to Host a game, either Internet or LAN, or you can join other Internet and LAN games, and interact with other players interested in multiplayer through the Community chat.
The Paradox Forums is a great place to find others who want to play Multiplayer Europa Universalis IV – just visit forum.paradoxplaza.com. Go to the board for Europa Universalis IV and you will be sure to find others eager to match their skills with another crafty human opponent.
It is very important to remember that you must be playing the same version of the game in order to begin a multiplayer session with another player. So you should consider what mods and patches you have installed. However, you don’t have to worry about what DLCs you have installed. You can enjoy multiplayer games with others even if you use different downloadable content.
The quickest way to verify that you are both using a compatible version is to consult the “checksum,” that four letter code following the version number at the bottom left of the main screen. If your opponent’s checksum matches yours, then you are ready to play.
Note that a checksum of XXXX indicates you have entered single player and backed out to main menu. To resolve this, you must exit and restart the game before attempting to play multiplayer
