7.14 PK

PK stands for Player Killing, another name for PvP (Player vs. Player combat).

We're operating on what we call "roleplay pk" or "roleplay pvp", where if you have a valid and justifiable reason to attack someone, you can.
 
This does not mean you can attack other players repeatedly just for being a member of an opposing organization. Neither can you justify your behavior by claiming something like "my character is a psycho killer!" A player must have done something serious to you to warrant an attack, and they must be aware of the conflict before you attack them.

Below is a FAQ-style list of questions and answers that commonly come up:
Q: How many times can I attack someone for <my valid reason>
A: Once, if you kill them, or they defend and kill you, the matter is considered resolved.

Q: Can I go and raid <some other faction> and kill anyone I see?
A: No. You're welcome to engage with anyone actively defending, but killing people who are uninvolved is never ok.

Q: Can I attack someone for attacking me back after I attacked them (...and so on)?
A: No, circular PK isn't a thing.

Q: Is it ever ok to camp a cloning location?
A: No.