Blizzard today boasted that total subscriber numbers for its vastly popular MMORPG universe World of Warcraft have hit the 11.5 million mark, up from the recorded figure of 11 million late last October.

The release of Wrath of the Lich King played a key role in boosting popularity of the online RPG, with sales reaching an impressive 4 million copies in its first month of release. That makes WotLK the fastest selling PC title in a month. What’s more, is that Blizzard VP Bob McKenzie points out that sales are up are across the board:

“Not only is Wrath of the Lich King still doing well, the base World of Warcraft game and the World of Warcraft Battle Chest are performing better than last year,” said Bob McKenzie, senior vice president of merchandising at GameStop. “That type of traction is very impressive for a game that is going into its fifth holiday season and speaks to the enthusiastic player base Blizzard Entertainment products have.”

Blizzard’s iron grip on the PC market isn’t going to let up anytime soon.

Read more: Wrath of the Lich King Shifts 2.8 Million Copies In 24 Hours, World of Warcraft: Wrath of the Lich King Arrives On November 13, World of Warcraft Hits 11 Million Subscribers, Blizzard Generates $1.2 Billion In 2007, Wrath of Lich King Beta Signups Open