"From Time to Time it is Necessary that Pestilence, Famine and War Prune the Luxuriant Growth of... uh... Video Game Avatars..."

One more reason not to, um, explore dungeons.

From Wired magazine.

In a bizarre case of art imitating life, players of the Blizzard Entertainment game World of Warcraft suddenly found themselves dying from a mysteriously rampant plague that ravaged their virtual world.

The plague began innocently enough. Blizzard introduced a new dungeon area in the world, intended to give high-level players a bit of a challenge. But when players reached the boss at the end of the dungeon, they got more than they bargained for -- and unknowingly took a little something back to town to share with their friends. The dungeon boss, called Hakkar the Soulflayer, cast a spell called Corrupted Blood. The powerful spell caused about 280 damage points to anyone it hit, and spread to other members of the attacking party as well. Such powerful spell attacks aren't unusual in the World of Warcraft game world. But what happened next was just plain weird.

When infected adventurers returned to town at the end of their quest, they inadvertently passed along the Corrupted Blood infection to those nearby. In short order, the plague ravaged the population. Soon entire cities fell victim to the artificial disease. And while 280 damage points may be easy for a level-58 Night Elf warrior to contend with, it's enough to kill a lower-level player in seconds.

Game administrators were baffled. As they scrambled to quarantine areas of the game world, the disease quickly spread beyond their control. Partially to blame was the game's "hearthstone" feature, which allows players to essentially teleport from one area to another, and which made it possible for the plague to reach the most distant regions of the map in just minutes.

Full story Here.