A series of sourcebooks for Hero Wars and HeroQuest.
From the publisher's website:
"Imperial Lunar Handbook is the essential guide to the vast Lunar Empire. Mighty and magical, decadent and dynamic, conquering and liberating, the Empire is rich and complex, a land of heroes, soldiers, and missionaries. It is a fusion of many disparate regions, each with its own beliefs, customs, and magic. Over all, the Red Moon guides and the Son of the Goddess rules."