NCsoft and it’s wholly owned subsidiary ArenaNet, the acclaimed developer of Guild Wars, today announced that on the cusp of its fourth anniversary, the Guild Wars  franchise has exceeded six million units sold.

Guild Wars is the award-winning and genre-defining series that is one of the most popular and successful online role-playing games in the industry.

To commemorate these milestones, ArenaNet has just released a major content update, including new quest content and extra storage options.

“We are humbled by how gamers have responded to Guild Wars Gold over the past four years, and we are proud that the game and its community have helped to continually shape, define, and expand the genre,” said ArenaNet studio head Mike O’Brien.

“Our subscription-free business model has proven to be a big hit with gamers, bringing an enormous and diverse online community to the game.”

Guild Wars Gold is one of the most successful PC gaming franchises of all time. Since its release in 2005, it has received numerous awards for its innovative design, world-class art direction and robust content streaming engine. ArenaNet continues to support the game’s thriving community with regular in-game events, updates, and community activities.

The Guild Wars Gold universe contains three campaigns and an expansion pack: Guild Wars, Guild Wars Factions, Guild Wars Nightfall, and Guild Wars: Eye of the North. Last fall, NCsoft released Guild Wars Trilogy that combines all three campaigns with additional bonus items.