Double click inside the Assassin’s Creed 4 Black Flag folder and run the exe application.
zip file and click on “Extract to Assassins’s Creed 4 – Black Flag.zip” (To do this you must have 7-Zip, which you can get here). Once Assassin’s Creed 4 Black Flag is done downloading, right click the.Now let the download begin and wait for it to finish.