I am Aaron Kelsey, I love Paradox Interactive, they have the best sandbox games around. I have spent THOUSANDS of hours of a list of Paradox games including: Crusader Kings 2, Europa Universalis 4, Europa Universalis Rome, Hearts of Iron 3, King Arthur II: The Role-Playing Wargame, Supreme Ruler 2020 Gold, Supreme Ruler: Cold War. So, as you can see I am a huge fan of Paradox Interactive. Also, I recently spend many hours working on a mod for Crusader Kings 2 based of The Witcher books/games, It involves all races/religions/regions/factions, it is very in depth. I am currently looking for help too! PM me for more info about it.