"Rather than labeling Guild Wars an MMORPG, we prefer to call it a CORPG (Competitive Online Role-Playing Game). Guild Wars was designed from the ground up to create the best possible competitive role-playing experience. Success in Guild Wars is always the result of player skill, not time spent playing or the size of one's guild. As characters progress, they acquire a diverse set of skills and items, enabling them to use new strategies in combat. Players can do battle in open arenas or compete in guild-vs-guild warfare or the international tournament. Engaging in combat is always the player's choice, however; there is no player-killing in cooperative areas of the world"