Guild Wars has been a huge success for ArenaNet. There are a good number of reasons for this, one of which is the developers' great love and attachment to their own game and subsequent commitment to making Guild Wars all it can be. Considering the game's business model, this is a very happy surprise for many gamers who tend to find paid online games seriously lacking in these areas. While the developers of this fantasy RPG have continuously updated the game with little tweaks and fixes, they've been saving up a bunch of big additions for one gigantic update named after the area it's focused around. Sorrow's Furnace is a bleak stop on the tour of Guild Wars with some nasty surprises in store for players of skill. Entering the Furnace isn't for the timid, but those looking for some serious co-op play that'll add some big fun have a treat in store for them.