"World of Warcraft" expansion pack discount asks players to prepare for Pandaria.

Blizzard is offering World of Warcraft expansion packs at a 75 percent discount this week in preparation for the release of Mists of Pandaria, the massively multiplayer online game's lastest add-on, developer Blizzard announced yesterday.

Players must purchase the packs directly from Blizzard before the sale ends on August 27th at 11:59 p.m. PDT. The promotion includes the Battle Chest bundle, featuring the original World of Warcraft game and The Burning Crusade expansion pack, and the Wrath of the Lich King add-on for $5 each. Players can also snag the Cataclysm expansion for $10.

Mists of Pandaria is coming on September 25th and will be available in two special collector's editions.