A searchable list of all idea group IDs for use in the addideagroup console command. Find below a list of EU4 idea groups, with their ID (keys), for use in the addideagroup console command. Type the name. French Ideas, FRAideas.
It’s almost hard to believe that Europa Universalis IV is over five years old. Its many expansions total over $200 at full price if you’re just looking at the add-ons that alter gameplay, and not the milieu of minor, cosmetic DLC. Whether you’re new to the series and you want to know what’s what, or you're a vet looking to top up your collection and want to know what’s most worth the money, we’ve put together this handy guide to help you.
Keep in mind that these are all non-sale prices, and most older Paradox expansions are discounted anywhere from 25% to 75% off during special sales, such as during holidays or when a new DLC is released. Typically, the longer something has been out, the more it will be discounted. This list is in chronological order, so you can probably get the stuff at the top for a couple bucks if you wait for the right moment.
We've sorted the expansions into two ranked lists: Essential for Everybody, and Situational (depending on what nation you’re playing), as I think they’re all worth owning eventually - it’s just a matter of what order you prioritize them. If you have to make a tough choice, I’d acquire all of the 'Essential' ones in order first, then grab the 'Situational' ones that apply to the countries and features you’re most interested in checking out.
ESSENTIAL:
SITUATIONAL:
Available from: Paradox Plaza, Steam
Highlights:
Is it worth it?
You can skip this one entirely if you want to play strictly with the historical New World continents and don’t care about North American tribes (specifically in what is now the US and Canada - Central America was addressed in its own expansion). The new mechanics listed on Steam for colonial nations are actually part of the free patch, so you don’t need to buy the DLC to access them. If you are interested in North American tribes, it definitely takes them from being barely represented in the game to feeling like full-fledged nations. Random New World is a fun novelty, especially the first few times, but I don’t find myself ever using it these days.
Available from: Paradox Plaza, Steam
Highlights:
Is it worth it?
This is the “trade expansion”, and since for my money, trade is one of the more intriguing and well-designed systems in EU4, I’d hesitate to pass this one up. Adding on the fact that it’s cheaper than Conquest of Paradise, which added fewer meaningful mechanics, and the fact that you can get it for next to nothing on every Steam sale involving EU4, this one is easy to recommend. It will be least valuable to players who prefer landlocked, non-colonial, land warfare-focused powers in Central and Eastern Europe.
Available from: Paradox Plaza, Steam
Highlights:
Is it worth it?
As EU4’s cheapest gameplay DLC (even cheaper on sale), it’s hard to say no to that question. National Focus is a feature I use in almost every game of EU4, though you can also unlock that by owning Common Sense. In light of that, it’s possible to skip this one if you plan to pick up Common Sense instead and you only ever want to play non-elective monarchies, as it doesn’t really add anything for government types outside the ones listed above. The new events are well-written and interesting, and particularly essential if you’re going to play the Netherlands. The difference for them in terms of options and flavor with this DLC on versus off is night and day.
Bloggie software update 1.3 available for mac. Available from: Paradox Plaza, Steam
Highlights:
Is it worth it?
Yesyesyesyesyesyesyesyesyes!
Until very recently, Art of War was almost indisputably EU4’s most essential expansion, and it probably still is. If you asked me off the top of my head which expansion to buy if you could only buy one, I’d definitely say Art of War. The Religious League Wars and Revolution Target mechanics add major, recurring events that I look forward to interacting with every playthrough. Features like being able to give my AI allies orders and demand war reparations are essential features I would have a very hard time living without. This one is a winner, through and through. If there’s anyone it’s least useful for, it would have to be nations that never go to war and are nowhere near/have no plans to interact with Europe.
Available from: Paradox Plaza, Steam
Highlights:
Is it worth it?
It’s almost an automatic yes based on the Nation Designer alone, which is a ton of fun to mess around with (though I find myself using it less and less these days). If you prefer a strictly historical experience, this expansion does for Central and South America what Conquest of Paradise did for North America, making the nations there feel fully playable rather than just being in the game as a placeholder. The new automatic exploration options are also something I’d have a hard time playing without at this point. This one would be of least value to someone not interested in the nation designer, who never plays in Central or South America, and doesn’t intend on playing exploring/colonizing nations.
Available from: Paradox Plaza, Steam
Highlights:
Is it worth it?
This expansion has come under significant criticism for introducing a feature as fundamental and borderline essential as provincial development and putting it behind a paywall. I don’t necessarily disagree - it’s difficult to even play properly in the current version of the game without it. But that being said, it’s hard to call this anything but a fantastic expansion - even if we imagined development was a free feature and just looked over the rest of the list. The Buddhist mechanics aren’t the greatest thing ever, but Parliaments are quite interesting, and Protestants and Theocracies are much more fun and fleshed out with this expansion. Whether you feel Paradox is twisting your arm withholding the development mechanics or not, this one absolutely has to go near the top of the “Essential” list.
Available from: Paradox Plaza, Steam
Highlights:
Is it worth it?
As of 2018's Dharma, the estates mechanic formerly part of this DLC has now been made free for everyone, although you still need this DLC for the unique Cossacks & Dhimmi estates. To compensate, owners of this DLC instead get access to the 'Sich Rada' Government reform which enables the following Government interactions: 'Receive Fleeing Serfs', 'Organize Raiding Parties' and Raise Cossack Host.
This is definitely the 'diplomacy expansion', and the utility it adds in that department for all nations is significant. I can’t think of anyone it would be useless for, but it will be of most value to those who like playing as steppe hordes and Eastern Europeans,
Available from: Paradox Plaza, Steam
Highlights:
Is it worth it?
This is the first of the newer batch of expansions since Art of War that I’d feel comfortable saying you could skip if money is tight. The best feature is probably the new automated naval orders, which are a life-saver when trying to manage multiple fleets with different roles. Even so, I don’t find fleets require as much micromanagement from me as armies in most conflicts, so I could conceivably play with that feature off and not have it ruin my day. All the extra spy stuff is pretty reasonable to live without as well. This is definitely one you can prioritize lower, and will be of least value to those who prefer landlocked nations and don’t really make use of the espionage mechanics - which is a perfectly reasonable and viable playstyle. It’s arguably of most value to Merchant Republics, as hiring out your soldiers for profit is a cool nod to history and can be a fun way to see some action when you have no desire to go to war yourself.
Available from: Paradox Plaza, Steam
Highlights:
Is it worth it?
I could certainly live without ruler traits. It wouldn’t make the game more of a pain to play. But I certainly wouldn’t want to. They add so much depth and flavor to the human side of EU4 - the personal drama and small details that help that painted map come alive and become a place in your mind’s eye. For that reason alone, this is one of my favorite expansions. Beyond that, most of the goodies are situational stuff for Coptic Christians, Fetishists, the Ottomans, and Prussia. This expansion will be of the least value to players not interested in any of those nations. The Great Power mechanics can open up some interesting, new play styles and a goal for smaller nations to strive for, but I probably ignore them roughly as often as I factor them into my plans.
Available from: Paradox Plaza, Steam
Highlights:
Is it worth it?
Being that it’s so new, I’ve only played a fraction of the time with Mandate of Heaven that I have with the other expansions on this list. That being said, I think I can say definitively that it’s absolutely essential if you plan to play in or anywhere near East Asia - particularly Japan, China, or Manchuria. It really does make the region feel like a second sphere as fleshed-out, diverse, and fun as Europe, which is a huge accomplishment.
The Diplomatic Macrobuilder is great, but I don’t yet feel like I couldn’t live without it. That opinion may change as I grow more accustomed to it, though. I’m still playing around with Ages, and I’m not absolutely wowed by them, but I love that they give you objectives that reward you for playing differently than you might otherwise. Obviously, this expansion will be of least value to players who don’t enjoy playing in or around East Asia.
Available from: Paradox Plaza, Steam
Highlights:
Is it worth it?
The focus of immersion packs, of which Third Rome is the first dedicated example in EUIV, is to add a bunch of new mechanics and flavor for a specific group of nations while not affecting the rest of the world in any major ways. So more than any other expansions, your mileage on this one depends entirely on how much you enjoy playing East Slavic and/or Orthodox Christian nations. You'll have a ton more small things to do when playing that region, though only a couple have any major impact. My favorite of the lot is Siberian Frontiers, which allow a strong Russian nation to fill in their historical borders without having to spend an idea group or two on acquiring colonists.
Available from: Paradox Plaza, Steam
Highlights:
Is it worth it?
Cradle of Civilization makes the Islamic world feel as rich, detailed, and diverse as Western Christendom, opening up areas like Persia and Anatolia for all kinds of new political situations. It's unambiguously essential if you like playing Muslim countries or anywhere in the vicinity of the Levant, Anatolia, Mesopotamia, Egypt, or Persia. The whole set-up with the ailing Timurids, their opportunistic neighbours, and their potential successor states is brilliant and can go so many different, interesting ways now.
Both the Mamluks and the Ottomans get enough new toys to play with that they'd feel naked without it. And for everyone else, Army Professionalism adds a new dimension to military dominance. It will be of least use to players who don't like playing Muslim nations or anywhere in the vicinity of the Middle East.
Available from: Paradox Plaza, Steam
Highlights:
Is it worth it?
The Immersion Packs are rarely 'essential', but it really comes down to how much you like playing games as England or Scotland. With this pack and the free patch, playing a minor Irish nation is also more viable than it used to be, but if you're not an anglophile there's less here for you. Naval Doctrines are cool, but not essential (and useless to non-naval powers). Innovativeness is a nice boost if you can keep ahead of the tech game, but the new Institution mechanics make that quite hard. Coal is.. well, coal. We're not sure what to make of that one.
The best case for this pack are the missions - the free patch completely overhauled the mission system for the better, but the non-DLC missions for England, Scotland and Irish minors are a bit bland, so you'll want the DLC missions instead. We'd comfortably say though that if you're ever considering going back to the British Isles, you'll want this pack.
Available from: Paradox Plaza, Steam
Highlights:
Is it worth it?
Despite the focus on the Indian sub-continent, many of the changes can have an impact on nations across the globe. Government Reforms especially can be an interesting mechanic when playing in North America, and the improvements to centres of trade & trade companies will add more dynamicism to expanding trading and colonial empires in Europe. The quality of life improvement to colonists & rebel suppression are especially hard to pass on.
The meat-and-potato of this pack lies in India, however, so if you're not interested in that area of the world you'll be paying a lot of money for not a lot of new stuff. As time passes and the discount on this pack gets greater in each successive sale, it will become more and more a decent purchase choice.
Available from: Paradox Plaza, Steam
Highlights:
Is it worth it?
The $10 expansions have become highly situational in recent years - if you like the idea of trying to be a pirate nation and/or spend a lot of time in the Spanish peninsular, then this is a great expansion. Otherwise you could probably wait until it's on sale. Owners of Rule Britannia and Dharma get extra content from this expansion as well, so there's some extra value for money if you're a DLC completionist.
What are your thoughts on EU4's DLC? What would your 'must buy' list look like? Let us know in the comments!