Hearts of Iron IV Is a great game, at first it's kinda hard to understand all mechanics but when you finally get to understand how it works, you enjoy the game even more. Playing it solo is a good way to train yourself, you can choose any country and as time passes, more and more of them have unique gameplay. Of course, the ultimate way to become a good player is playing multiplayer, I don't reccommend joining random games, try to find friends to play with. If you don't have any ( Like I did at first ) You always can search up on Internet and find some Hearts of Iron Discord ( wich is what I did as well ) You can find any kind of player wich is very cool, I really enjoy playing with other people because it makes the game way more interessant and hard. But, That's a paradox game, and Paradox loves DLC's, so yeah, if you want to fully enjoy the game, you'll have to get all dlc's except if you play multiplayer and the game hoster has all dlc's. Knowing a dlc is between 10$ and 20$, To get a full game, you'll have to put 100$. There is some other annoying things about this game, like the bugs, the fact that after 1943, the game is very slow because it needs to calculate each actions of every country in real time. Some bugs that can ruin your game and others.. But I will say that even with thoses things, this game is still very funny to play with friends, I always enjoy spending hours to conquer the world.
So I reccomend Hearts of Iron IV.b

Hearts of Iron IV Is a great game, at first it's kinda hard to understand all mechanics but when you finally get to understand how it works, you enjoy the game even more. Playing it solo is a good way to train yourself, you can choose any country and as time passes, more and more of them have unique gameplay. Of course, the ultimate way to become a good player is playing multiplayer, I don't reccommend joining random games, try to find friends to play with. If you don't have any ( Like I did at first ) You always can search up on Internet and find some Hearts of Iron Discord ( wich is what I did as well ) You can find any kind of player wich is very cool, I really enjoy playing with other people because it makes the game way more interessant and hard. But, That's a paradox game, and Paradox loves DLC's, so yeah, if you want to fully enjoy the game, you'll have to get all dlc's except if you play multiplayer and the game hoster has all dlc's. Knowing a dlc is between 10$ and 20$, To get a full game, you'll have to put 100$. There is some other annoying things about this game, like the bugs, the fact that after 1943, the game is very slow because it needs to calculate each actions of every country in real time. Some bugs that can ruin your game and others.. But I will say that even with thoses things, this game is still very funny to play with friends, I always enjoy spending hours to conquer the world. So I reccomend Hearts of Iron IV.b