From the introduction:
Sadresh is a realm of harsh conflict and rugged danger. Though the cities of Shaleb and Gitrach are relatively peaceful, the wastelands are wild and untamed, and also filled with treasures—both in the form of wrecked ships and hidden ruins. Sadresh is a realm haunted by the Adat-Nol, a sinister black ooze that rises from the desert sands at night and whisks away unwary travelers into a sandy tomb beneath the surface of the desert. Until this menace is put to rest, Sadresh will remain a dangerous and harsh wasteland.
Sadresh is an excellent realm for combat-oriented games. The constantly warring factions, as well as the aggressive nature of monsters and dungeons, provide a continuous sequence of confrontational encounters.