Player versus environment

Player versus Environment, or PvE, is a gameplay distinction, in contrast with Player versus Player, or PvP, gameplay.

Player versus Environment is a type of gameplay common to RPGs in general. This is where the character engages in combat with computerized opponents. In Guild Wars, PvE content is only available to 'roleplay' characters. In PvE gameplay, your primary purpose (aside from fun, obviously) is to grow your character. This growth is achived through the gaining of experience points, either through quests or the defeat of enemies. Experience points can also be gained by roleplaying characters in PvP combat, where your character will gain experience for (a) winning a match and (b) killing an opponent.