After footage of the game's final boss surfaced from pre-release copies, players expressed concern to the developers that some intense rapidly flashing lights and other visuals during the final boss may cause serious seizures to players that have photosensitive epilepsy, and in general may be an eyesore to players that are not epileptic. The developers understood and significantly changed the battle effects in a day-one patch that was heavily recommended by Square Enix to be downloaded by future players.