The unique focus tree as well as the unit packs and the other unique mechanics make playing in the britsh isles very different from vanilla.
With the new free additions to ireland this DLC also makes Ireland much more interesting.

The universal mechanics like innovativeness, naval doctrine and the coal resource are OK but not worth playing full price if you aren't going to play in the british isles.

If you like this genre this game will be worth a playthrough.

If you don't like the genre this will probably not convert you

THere are 3 interesting features in this DLC:
1) china - you can interact with it in the east part of the map; it is interesting trying to make sure china doesn't see you ripe for conquering at the same time trying to gain soemthing from thr relationship
2) The new artifacts and portraits increase the immersion a lot. When playing as a western catholic power and during your crusade you steal some sort of artifact it makes you wonder how far it has travveled; it makes the world feel more alive.
3) The new casus belli are very useful to the early- mid game

IMO it is a DLC worth buying if you play at the far east like tibet and india. If you only play with western powers this DLC does very little that will affect you.

This DLC has 4 features:
- New portraits-> i feel this is the weakest part of the DLC, the new portraits feel bland to me. It adds orcs,dwarfs,etc. but no new portrait feels exotic
- new ship models -> These are great, they have lot of little animations that make these models come to life.
- 3 new voiceover sets for VIR -> these are always great of immersion
- 3 new music-> for me the music is ok

In short great ship models but filled with, imo, average features. I recommend this DLC on sale.

I feel there are 2 features this game has nailed very well. Alternate history and the production of WWII.
Alternate history makes the several playthroughs unpredictable which leads to a lot of replayability. From france going comunist to WWII starting because of a civil war in india, a lot of variety to it.
The way production is handled also makes the game very satisfying since your army will only have the resources you produced in the years towards the war.

While the game is very good it has 1 mechancs that need revamping. The naval part of the game currently doesn't work very well and it is extremely unclear if your fleet is winning or losing and if it is "helping" the war effort. Due to being a paradox game i ahve the hope that paradox will update this feature in the future.

While you can play with any country in the world, the base game offers a few countries with unique mechanics: France, UK, USA, Poland, Germany, USSR, Italy and Japan.
IMO those are the most fun countries to play with however if you feel you need more content you can always look at DLC which adds further countries that while small in nature are (relatively) relevant for the war, such as Yugoslavia, Romania, RAJ, china(s),etc.

IMO this game is worth buying for anyone that likes strategy games and WWII.

The soundtrack here fits very well with hearts of iron gameplay. IMO these tracks help alleviate the "soundtrack fatigue" after playing dozens of hours.

I highly recomend this game specially if you like city builders and/or strategy games.
This game is all about managing resources of your colony while trying to expand it while surviving the dangers of mars.

you should also know this game is published by paradox so it will probably be supported for a long time with both payed and free DLC.

Only buy this if you want to expand the portraits and other cosmetic stuff.
I like it and ,imo is worth the price for those that spend 100s of hours on CK2. For me the more portraits the easier it is to memorize people by face.

This DLC IMO gives quite a bit more depth into EU IV. The main feature that does this is the new provincial development system. This system allows you to invest your administrative, diplomatic and military power to improve your provinces; this system increases depth ebcause it allows you to improve your nation in a "tall way", in other words, with this DLC you don't need conquest to make your nation stronger.
this DLC revamps: english, theocracies, Protestantism and Buddhism .

I recomend this DLC if you want to play with smaller nations or just want to make the game more complex. This is one of the few "must" buy DLCs for EU IV, however If you don't play with smaller nations then wait for a sale.

This DLC adds a lot of QoL changes to war in EU IV; from giving territory you occupy to your vassal/allies to more easily move your armies around with the fleets.