The Scourge Invasion event has come toWorld of Warcraft: Wrath of the Lich King Classicnearly a week earlier than was originally planned. Though scheduled to begin on September 13, theWrath of the Lich King ClassicPre-Patch event kicked off early, much to the surprise of bothWorld of Warcraftfans and developers.

TheWrath of the Lich King ClassicPre-Patch was organized in three phases. The first began on August 30th, and allowed players tocreate Death Knight characters inWorld of Warcraft Classic. Phase two, the Zombie Plague, began on September 6, and the final phase–the Scourge Invasion–was planned to start a week later and run untilWrath of the Lich King Classic’slaunch on September 26. However, a programming glitch caused the Scourge Invasion to start on September 9 instead.

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According toWorld of Warcraft, the early release was unplanned. The Scourge Invasion was supposed to start 168 hours after theZombie Plague began inWrath of the Lich King Classic, but a trigger accidentally fired off 72 hours into the event, causing the new content to unlock early. Rather than scramble to stick to the original schedule,World of Warcraftran with it. The Scourge Invasion kicked off a half week early, giving players more time to experience this historic event and earn some sweet loot.

The Scourge Invasion event allows players to fend off undead invasion points inselect places aroundWorld of Warcraftand discover special encounterswithin certain dungeons and cities. Completing these challenges awards special currencies and rare items unobtainable outside this event. All of this occurs alongside the infamous Zombie Plague event–a world-wide PvP event where players are transformed into ghouls which can prey upon other players and NPCs to spread the Scourge infection.

Players were thrilled to get the chance to start the Scourge Invasion event early. Many of the limited-time encounters and bosses are extremely fun, and several exclusive items–especially the Arcanite Ripper axe–arehighly-desired by manyWorld of Warcraftplayers. Having a few extra days to farm these items may be what some players need to get their hands on these special rewards.

Of course, theWrath of the Lich King ClassicPre-Patch event is far from perfect. With excitement abound, manyWorld of Warcraft Classicservers are experiencing long queue timesand massive crowds, making participating in parts of the Scourge Invasion difficult or impossible for some–not to mention the hordes of zombies roaming the cities. Hopefully, the extra days of the Scourge Invasion mean players experiencing difficulties participating now will be able to later once otherWorld of Warcraftplayers get their prizes.

World of Warcraftis available on PC.Wrath of the Lich King Classiclaunches September 26.