The Elder Scrolls III: Bloodmoon (2003)

The Elder Scrolls III: Bloodmoon is the second expansion for its RPG of the Year, The Elder Scrolls III: Morrowind for PC. Bloodmoon takes you to the frozen Island of Solstheim where the Empire is establishing a new mining colony - a venture being threatened by the prophecy of the Bloodmoon and rumors of werewolves. You have a choice of stories to follow and have the opportunity to defend the colony, take control over how the colony is built up, and eliminate the werewolves. Or, you can decide to join the werewolves and become one of them, opening up a whole new style of gameplay.