Fantasy Imperium, An Interactive Storytelling game of Historical Fantasy is a role-playing game written by Mark O'Bannon and published by Shadowstar Games, Inc. The game takes place in a historical setting chosen by the Storyteller, and the game details the history of Europe from the ancient world up through the 16th century. The types of equipment available to the characters are determined by the time period and location of the setting chosen by the Storyteller.