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Be a part of the greatest strategy role-playing experience on earth - the EU4 Grandest LAN Party. Fans from around the world will join together to write a new global history, streamed to a global audience. Part co-operative drama and part cutthroat politics, the Grandest LAN has enthralled players and community members since 2017. Enlist in the landmark event today!




Take part in the EUIV role-playing experience at a magnificent historical location. Since 2017 EUIV The Grandest Lan Party event has introduced fans to completely new ways of playing the Grandest Grand Strategy Game. Together, with your friends and other fans, you can create the greatest story possible, streamed live to the world.

What can you expect from this event?
  • 3-Day Multiplayer Campaign with custom rules to encourage role-playing

  • Suitable for players with different levels of experience, managed by game masters, tech specialists and a veteran events crew

  • Three-person teams work together to write new histories

  • Meet people from around the world who share your passion for EU4 

  • Live stream on official Paradox channels 

  • Meet the Paradox team!

  • Play with famous streamers!

The Experience


The Grandest LAN takes place at historic Moszna Castle in southwestern Poland. You will play, eat, sleep and party in this eclectic modern palace. The entire building is reserved for our use, so everyone you meet will be a part of the experience. Enjoy the historic location as well as the very modern kilometers of cables and dozens of computers.

The event will have 102 participants divided into teams of three, each of which will play one nation. Each team member will play a vital role in surviving the cutthroat world of early modern diplomacy, making alliances and conducting intelligence as well as actually playing the game. And don’t worry - there is plenty of room for rest, recuperation and beer.

The Grandest LAN is not designed as a competitive event as much as it is a role-playing one. Some nations will rise, and some will fall, but the goal is to tell a new and exciting story that emphasizes the creativity and dramatic flavor that Paradox games and Paradox fans are famous for.

The Scenario


To create an amazing story, we  add an additional layer to the regular multiplayer session of EUIV. 

This multiplayer session includes special rules that will apply to everyone, and encourage teams to conduct diplomacy in person,  meeting your opponents in the elegant rooms of Moszna castle. The great halls of the palace are the perfect place to plot, bribe, scheme, intimidate and make pacts with other nations.

We will also introduce a Roleplaying element to the scenario - by creating a story that casts you as the heroes. The story will be driven by Characters - our actors playing certain roles in the scenario - at the physical location and in the Multiplayer session. 

It will be up to you how much you want to get involved with interacting with them. 

All information about newly introduced rules, roleplay, gamemasters, and change to the default setup of the game will be described in the Rulebook, which will be made available to you before the event.



  • All-inclusive!

  • Set in the magnificent, historical site - Moszna castle in Poland

  • Exclusive access to all castle areas - no tourists will come your way

  • Sleep in a real palace - Moszna castle is also a hotel

  • Delicious buffet meals prepared by the awarded Moszna castle restaurant chief

  • Soft drinks, coffee, and unlimited snacks!

  • Computer stations and software provided

  • Extra activities included in the price 

  • Professional photos for everybody

  • Chill zone 

Types of tickets 

The regular ticket price is 699 euros. 

There will be a pool of 10 Special Tickets available to those who were drawn. Special Tickets are 2 Single Room tickets and 8 Apartments tickets. 

The special ticket price is 769 euros. It will be sold on a first-come, first-served basis.


The registration will be open from 27 June 2022. You will have the possibility to register as a team of three or as an incomplete team (two or one players). You will have plenty of time to fill out the form and there will be no stress.

The registration will close on 18 July 2022. We will randomly draw participants proportionally to the signups (we will calculate the percentage of complete and incomplete teams and draw them accordingly). 

If you decide to register as an incomplete team, you will be matched with other participants to form a three-person team. We will do our best to match you according to your needs and play style. Sign up timeline:

27 June - Sign-ups are open

18 July - Registration closes

19 July - The draw, results on the same day

20 July - Payment settlement for those who are luckily won in the draw


Practical Information

Learn more about the venue, the food, transportation and other useful information.
Practical Information

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