I’ve got an unhealthy amount of hours and money (games, DLC) invested in various Paradox games because I once pirated EU3 on a whim.
My Steam Library now contains CK2 with most gameplay DLC, CK3 with most gameplay DLC, EU4 with all gameplay and content DLC, Stellaris with most gameplay/content DLC, HoI4 with most gameplay DLC, Sengoku, and other Paradox games that aren’t grand strategy like Magicka 1&2.
And both my hours in CK2 and EU4 are in the 4 digit realm, though admittedly that includes times where I played in bed, fell asleep and the respective game kept running.