Art of War is the big one, as @InfuriatinglyRed was saying, though as I don't have Common Sense I can't comment on that. For sure, the most important one is AoW. If you like playing colonizing nations or as native tribes you can get El Dorado and Conquest of Paradise which both add flavour to these parts of the game. I played for over a year on vanilla EU4 without any expansions and found it enjoyable enough at the time so really it's up to you.



ParadoxPlazaWhat EUIV expansions should I get?Jun 14, 2016 at 10:45 AM