In 1987, TSR published H3: The Bloodstone Wars. It was written by Douglas Niles and Michael S. Dobson as a continuation of the H-series, which came to be known as a high-level adventure series. In a lot of ways, H3 is a return to the adventure model provided in H1: Bloodstone Pass, in that the module relies on Battlesystem Fantasy Combat Supplement rules for the large-scale battles, which take up a considerable portion of the adventure. Nonetheless, H3 provides a sufficiently flexible story to allow DM's to either use or ignore the mass combat components of the adventure. H3 consists of a 32-page story, with several pages of maps for battle encounters and dungeon exploration.