The official website of the popular MMORPG Guild Wars offers a free trial key for their expansion "Guild Wars: Eye of the North (GW:EN)". Players need a level 10 character (instead of lv. 20) from a full account of any of the three basic campaigns Prophecies, Factions, or Nightfall. Playing time is limited to 5 hours. Trial accounts can be continued - i.e. quest and level progress won't be lost - if the player choses to buy the expansion. Guild Wars has no monthly cost.