Once impregnable, castles collapse under a barrage of artillery fire, and bullets from muskets and arquebuses pierce knightly armor. Cavaliers replace heavy swords with elegant lightweight swords, cuirasses with doublets, acquire wheeled pistols and try to survive in a rapidly changing world. All around there is a flourishing of arts, sciences and crafts, a renewed interest in ancient culture. An era of global and inevitable change. Renaissance, or Renaissance.