The Birthright Campaign Setting set won the Origins Award for New Role-Playing Supplement in 1995. The Birthright Campaign Setting was designed by Rich Baker and Colin McComb. Anuire is influenced by medieval England and France. The set also includes Ruins of Empire, a sourcebook outlining domains and key characters in the region of Anuire. The campaign was later recognised as the first setting to support player characters as rulers, providing players with a game based on "diplomacy, politics, trade, construction and (of course) war". Also described are "domain turns", three months periods of time for a domain during which background events occur. These powerful characters have powerful foes, known as the awnsheghlien, the champions of the world's evil bloodlines. People with strong bloodlines make natural leaders, and while great, valorous deeds can enhance a character's bloodline and increase the character's power, failure can cause a character's bloodline to wane. The set includes the concept of bloodlines, hereditary magical powers which tie a family line to various domains in the form of land, temples, or political organizations. The set includes a new system for resolving large battles between fantasy armies, using cards to represent various regiments and a position sheet to indicate things such as which side is holding the line and which is on the flank.
The Birthright Campaign Setting contains three books, a ref screen, two maps, over 100 cards to use for playing out large battles, and a dozen reference cards, all in full color.