The Baldur's Gate countdown that popped up last week has now ticked its last tock, revealing a brand-new expansion called Siege of Dragonspear. It's a "massive" addition to the epic RPG franchise, taking place between the events of the first game and Baldur's Gate II: Shadows of Amn.

Baldur's Gate: Siege of Dragonspear tells the tale of a mysterious crusade in the north, led by a warrior known only as the Shining Lady. The city of Baldur's Gate once again calls upon you and your allies to save it from chaos, but there's more to this march than first meets the eye: Like you, the Shining Lady is rumored to be the child of a god, and the Lord of Murder, though dead, "still casts a long shadow upon your path."

The expansion will add an estimated 25 hours of gameplay to Baldur's Gate: Enhanced Edition, with new areas to explore, monsters to kill, treasures to claim, and four new NPCs to recruit to your party. The expansion will also add the Shaman class to the game, more than 100 new magic items, a redesigned interface, cross-platform multiplayer (it's being released for Windows, Linux Mac, and mobile), and a soundtrack by the outstanding Sam Hulick, the man whose music made you cry in Mass Effect 3.

Also very interesting is the new Story Mode difficulty that "allows players to experience the entire story with none of the Game Over screens." Those who prefer it the other way can opt for the Legend of Bhaal difficulty, "for a challenging tactical experience."

Baldur's Gate: Siege of Dragonspear will not work with the original release of Baldur's Gate—a copy of Beamdog's Enhanced Edition is required to play. Pricing and release date have not been announced, but we do have some screens for perusal, and more information is up now at siegeofdragonspear.com.