Master of Spies As a player, you take the role of a powerful spymaster in the world of Eldinmoor™, using your underlings to infiltrate the four Powerful Factions of the world. By moving them higher and higher in the courts, you can amass more secret information. But be careful, for other Spymasters are about, and they will try to thwart your every move! Master of Spies is a card game of luck, skill, and betrayal set in the World of Eldinmoor™. The game is for 3 to 6 players and takes about 30 to 45 minutes to play.