2K Games has announced Minerva's Den, an all-new single-player focused downloadable game add-on for BioShock 2 that introduces new characters, locations and mystery to the world of Rapture.

Minerva's Den is a self-contained narrative experience that puts players in the role of an all-new character who has teamed up with Brigid Tenenbaum to unravel a dictator's stranglehold on a key district in the distinctive city under the sea.

"Minerva's Den is a substantial addition that will give players more of what they're looking for: more story, more narrative, more gameplay and more of Rapture," said Christoph Hartmann, president of 2K. "The core team has created an exciting product that further enhances the mystery and allure of the world of Rapture. Minerva's Den will be a fitting conclusion to the BioShock 2 saga."

In the new DLC players will explore Rapture Central Computing, a never-before-seen district of the undersea city, and uncover the dark secrets hidden in its founder's past. Wield new high-tech weaponry and a devastating new Plasmid to defeat the threats that await in Minerva's Den: more dangerous Splicers that command the power of the elements, upgraded Security Bots that throw rockets and lightning bolts, and even a never-before-seen type of Big Daddy.

Developed by 2K Marin, Minerva's Den is coming to Xbox 360, PS3 and PC this autumn.