The Black Pits is one of the enhancements that make up Baldur's Gate: Enhanced Edition that allows you to create a full party and battle through fifteen hellish battles in a desperate bid to escape. Difficult challenges, unique battles, and a bizarre cast of characters await you within the Underdark!
• A stand-alone adventure set deep within the Underdark
• Fifteen levels of arena-style combat challenges
• Full control and customization of up to six party members
• Over 6 hours of additional gameplay

The Black Pits are your new home… enjoy your stay while you can!

Pfft. Less interested now. I want additional content for the main game, not some stand alone thing.