Knights and Barbarians is a total conversion for Age of Empires III and both its expansions. Command armies from one of fourteen medieval powers in detailed, intense battles to defend or expand your kingdom. The timeline of Knights and Barbarians stretches from the twilight of the Roman Empire to the infancy of the Italian Renaissance. New content includes unique gameplay mechanics, units, factions, maps, music, and much more.
Was very impressed by the mod overall - not sure if I agree with all the implementations but visually impressive and the rebalancing was worked very well.