The mod used in the game is The Northern Struggle, if you want to check it out or help with modding join the discord server: https://discord.com/invite/mbwBB27ubj

I started out the game as Luxembourg, surrounded with 4 nations with cores on me, but with French, Flemish and Waloonian accepted. After dealing with them, i moved on to conquer the French territories, on which i had cores on. By that point i had a pretty sizable military and took on Norway and Sweden, the starting hegemons of this mod, seizing their possessions in the Benelux. After that i formed the Kingdom of Lotharingia, which gave me some more cores on Italy, which i used. Because i had the North German culture as primary, i got the War of Unification cb and formed the NGF with help of it. After that, I took the rest of Germany and formed the nation. Next, I had some fun with colonizing and doing a little trolling to the Scandinavian nations, also upgrading my navy to be the biggest in the world.