Perfect World has announced Nightfall, the largest expansion for Forsaken World to-date, has been released. Nightfall includes new dungeons, quests and revamped game modes. The MMO will also be hosting a Phantom Orb Event which will provide players with a chance to acquire a rare phantom pet. Players level 40 and above who log-in from now through and April 1 will be given the Phantom Orb Chance Box free of charge. Watch the trailer for the expansion below.