It’s been 17 years since the release of Baldur’s Gate, which, of course, makes this the perfect time for an expansion pack.

Last night, the folks at Beamdog—best known for releasing Enhanced Editions of the two Baldur’s Gate games—announced Baldur’s Gate: Siege of Dragonspear, a new entry in the series that’s set place between BG1 and BG2. Siege of Dragonspear will run on the Infinity Engine, they say, and it’ll tell a new story after the death of Sarevok but before the rise of Irenicus.

In case you’re not familiar: the Baldur’s Gate games are top-down isometric RPGs that follow strict D&D rules and let you pause during combat. They’ve held up really well today, especially BG2, which remains one of the greatest games ever made.

And now we’re getting a new one, developed by some ex-BioWare folks who have spent the past few years porting and enhancing those old Infinity Engine games. Says Beamdog:

The events between Baldur’s Gate: Enhanced Edition and Baldur’s Gate II: Enhanced Edition are at last revealed in this exciting new expansion to the original game.

Though Sarevok is dead and his plan for war averted, peace eludes the citizens of Baldur’s Gate. A crusade marches in the north, seizing supplies, forcing locals into military service, and disrupting trade along the Sword Coast. A charismatic warrior known as the Shining Lady leads this army, her background shrouded in mystery. Can the rumors be true—is she, like you, the child of a god?

The closer you get to the Shining Lady, the more you realize your father, the dead Lord of Murder still casts a long shadow upon your path. Baldur’s Gate has put its faith in you, but you must determine whose interests you truly serve before you face the Shining Lady among the ruins of Dragonspear Castle…

Isometric RPGs sure are making a comeback, huh? There’s no firm release date yet, but the folks at Beamdog say Dragonspear will be out relatively soon for PC/Mac/Linux and then later this year for iOS/Android too. Hopefully it will be a worthy addition to the franchise.