The rough frontier known as Diablo sits on the fringes of the vast Plain of Srevi in the wide pass between the Spartu and Sax mountains. It's a welcome stop for adventurers, hunters, prospectors, and others making their way to the plains, but it can also be a dangerous one, and visitors are well-advised to remain armed. The town lies just outside the southern borders of the small Kingdom of Alvard.

Though only a modest settlement, Diablo has a general store, armorer, magic shop, bank, hotel, and a surprising number of taverns which range from the seedy to the atrocious.