Strong powers on diploma are placed on Player clans which cast control on their relationship with other player clans and have the ability to declare war on other clans unilaterally. When clans are at war with each other, they may kill one another without alignment penalties. It is free to attack Player-owned cities and then siege. It is total 4 hours to siege Player-owned cities. An attack on the enemy's shard holder or city is launched by the defenders in the first two hours. The siege comes to an end when the defenders are victorious. The attackers may make an attempt to capture the defender's city after two hours passed. Only two hours are available for them to destroy the clan stone. At this phase, there are a variety of different siege weapons in Darkfall such as cannons and siege hammers, all of which are player-crafted. A limit is placed on the rate of destruction of a captured city of 1 building per day; however some buildings may be destroyed at any time by bringing their structural integrity to zero.