For those looking for the full experience, including the deep-dive historical and alternate-history paths for Turkey, Greece, and Bulgaria, you can find more details on the Official Paradox Interactive Page .
: Several new releasable nations were added to the game, including Kurdistan , Herzegovina , Dalmatia , and Transylvania .
The "Collie" patch focused on improving accessibility and expanding the game's map without requiring a purchase: Hearts of Iron IV: Battle for the Bosporus Free...
If you own specific older DLCs, the 1.10 update also provided "free" bonus content for those expansions:
: New in-game tutorial videos were added to help new players navigate the game's steep learning curve. These are accessible via alerts at the top of the screen. For those looking for the full experience, including
: Changes were made to how naval supremacy scales, affecting how players control the seas without needing specific DLC mechanics.
The was the free patch released alongside the Battle for the Bosporus country pack for Hearts of Iron IV . While the main expansion adds paid focus trees for Turkey, Greece, and Bulgaria, the free update provides significant refinements to existing Balkan content and general gameplay. Key Free Features of Update 1.10 ("Collie") These are accessible via alerts at the top of the screen
: Added a special infantry model with a Pickelhaube for Unaligned Germany.