A playable build of Assassin's Creed Black Flag Resynced has leaked before its release date, with some outlets reporting that the game's DRM protection has been bypassed. The leaked build can reportedly run on Steam Deck and Steam Machine with the right settings. However, the game's quality is uncertain, with one outlet describing a preview build as "clumsy" and buggy, while others focus on the leak itself and the game's potential performance on certain devices.