"The original Assassin’s Creed IV: Black Flag launched 13 years ago, but the new Assassin’s Creed Black Flag Resynced will come with several new requirements.

According to the game’s Steam page, Ubisoft is adding Denuvo DRM with a limit of five activations per day.

Players will also need a Ubisoft account and must accept a separate third-party EULA to play the game."