Is Nightfall an expansion pack or a stand-alone game?
Nightfall is a stand-alone product. Those who own Prophecies and/or Factions are not required to purchase Nightfall in order to continue playing on their game account, and those who purchase Nightfall may play it without purchasing Prophecies and/or Factions. However, there is a high level of interconnection between the three games that makes having all of them an exceptional experience.
