One of the most famous features, also the most controversial, of Darkfall is that the cruel open world of in-game battle. Nobody will give a sign for retreat in PvP, and when it comes there's no hidden place to avoid the encounter. If someone claims you head, you had better take more care of it for you may lose it perhaps anywhere anytime. In Darkfall plyers can align and killing of a member of the alignment may incur penalty. This does mean you can make such a killing, but that you should undertake some consequences for you actions. This is perhaps the reason for people's like and hate toward the game alike.
This is seldom seen among the mainstream MMOs.
In an era dominated by WoW, it is difficult to find a WoW terminator. But we can expect a wholely new game, a game with a strong player base. Darkfall brings the hope, for its unique elements that never appeared on other games.