There is always heated debate about how much, if at all, [[RPG]]s should support PKing. Almost no one argues against dueling, but whether the [[PvP]] combat should ever be non consensual is the big question. Most early RPGs allowed it, most modern ones do not. Players must select PvP upon character creation, or by the realm they play on, or by the game type they join, but in almost all cases it's possible to avoid PvP entirely, if a player so desires. [[World of WarCraft]] does not, and [[Diablo III]]Diablo III will not, allow non-consensual PvP.