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

: Provides the original game and will be a primary platform for the "Resynced" edition.

: The game is included in Ubisoft+ Classics and PC Game Pass (via the Xbox app). PC System Requirements

: Offers the Standard Edition and frequently features the game in franchise sales.

The most reliable official sources for a digital download include: