Player Killing

The act of killing other players in an online game. With each story the act holds different meanings and weight.

In Sword Art Online
In SAO the act of killing another player was equivalent to killing another person in real life since their brains would be fried. The most pronounced case of murderers was a guild called Laughing Coffin. The act of killing other players would make the player's cursor red.

In Alfheim Online
The act of killing was encouraged since it was territorial battles which resulted in obtaining items.

In Gungale Online
While the gameplay in the game wasn't as developed, players were encourage in killing others since the guns which were effective on monsters were not effective on humans, but live ammo guns worked well so a seperation on gun choice determined play style.