Blizzard has apologised for the server stability issues that hampered the launch of World of Warcraft: Warlords of Draenor, and announced plans to make it up to players with five free days of game time for all active subscriptions created on or before November 15, 2014, AEDT.

“The first two days of the expansion were not a great experience, with many of you facing high queues or significant gameplay problems,” wrote J. Allen Brack on Battle.net. “We worked around the clock to tackle the demand issues and technical challenges, and fortunately things started looking better on Saturday.

“While millions of you were able to get in and play over the weekend, with many already reaching level 100, others still ran into very lengthy queues, particularly on the highest-population realms.”

To address this, Blizzard has expanded the instancing technology it used to improve queues over the weekend, said Brack. It is also raising the capacity of all realms.

"This will result in approximately double the prelaunch capacity on each realm, which should greatly reduce queue times for most realms if not eliminate queues altogether."