In Feudo, players move their various units from their castle, around a map, capturing cities and eliminating enemies. There is a luck factor, in the form of the plague: Every turn the plague moves, and may infect your army units. You use cards to move your army, and shillings to purchase additional movement or the use of mercenaries.
(From the back of the box:)
"In the year 1265 A.D., England's most powerful Barons clashed to contend the precious lands of the manor of Evesham. The outcome of this battle depends on your strategy. Will you make use of the charm of your Milady or will you go to the Convent? No one knows what moves you will make. Be careful of the fog and keep away from the plague. Play your shillings and strike the enemy where he least expects it. But if you become the strongest Baron, King Henry III will also join the struggle, and winning will be even harder."