Do I need to own a copy of one of the previous Guild Wars campaigns in order to play Guild Wars: Eye of the North?
Yes, because Eye of the North is an expansion rather than a new campaign—and because it is intended for your high-level characters—you need to own at least one of the Guild Wars campaigns—Guild Wars (the original campaign), Guild Wars Factions, or Guild Wars Nightfall—in order to play Guild Wars: Eye of the North. However, you do not need to complete any of the previous campaigns to play GW:EN.
