The most reliable official sources for a digital download include:
: The game is included in Ubisoft+ Classics and PC Game Pass (via the Xbox app). PC System Requirements Assassin's Creed 4 Black Flag Download PC Game
The original game is highly accessible for most modern hardware, while the "Resynced" version requires significantly more powerful components. System requirements for Assassin's Creed IV Black Flag The most reliable official sources for a digital