From the back of the book: This action-packed epic takes the world of the Diablo II computer game and translates it into the ultimate AD&D adventure. You can create AD&D heroes with a Diablo twist or use heroes from any AD&D campaign, then send them off to challenge terrors once found only on a computer screen. The adventure starts in Tristram, the battleground of the original Diablo game where Diablo, Lord of Terror, rules a legion of demons. There, the heroes explore the mysterious monastery - full of dangers and challenges pulled right from Diablo but enhanced for your tabletop game!