A Paradox Gamer's Guide to Reviving a Nation in Debt

I used to be an ordinary Paradox gamer. Through a twist of fate, I transmigrated to another world and got a System with a game-like interface. To save this weak country, I have to put everything I’ve learned to use and restore the kingdom to greatness. So, am I playing Crusader Kings III, Mount & Blade II, or Hearts of Iron IV? (Most people are familiar with Hearts of Iron IV and Stellaris, and they’ll appear later. There’ll also be an alternate-world TFR storyline. For now, the plot has more to do with other Paradox games, Mount & Blade and Crusader Kings III, with Europa Universalis IV coming later.)