🚀 go-pugleaf

I play a lesser known multiplayer online rpg called "Legends of Kesmai"
and here is how this game deals with pkillers.

Each time you kill another PC, whether intentionally or not, you will
receive a “mark” against your account.  More than three such marks will
result in your being locked out of the game! Killing another PC in
self-defense does not incur you a mark.

If someone has killed you and it was an accident, you may forgive them
at any time using the forgive command. Forgiving a player removes the
mark from their account. 

Marks expire over time. The more marks you have, the longer they take to
expire. If you have one mark, it will expire in two weeks. If you have
two marks, the first one will expire in four weeks, the second in an
additional two, If you have three, the first will expire in six weeks
and so on. If you have more than three, you must be forgiven to remove a
mark. 

Somehow, with the foregoing rules in place, pkilling isn't very much of
a problem in this game.

Bob