Since the Mage Wars, there have been twelve major zombie apocalie recorded throughout the Known Worlds. These are of course all caused by Necromancy, and are one of the major factors leading up to the Necromanic Wars; though it is important to note that Necromancers have never been directly and malicously responsible for a zombie apocalypse. At best their involvement could be considered "criminal negligence" - though given the losses of life sometimes involved this is quite bad.
Known Worlds Zombie Event Scale
In A.Y. 1484, Pendragon Genghis Sater ordered the creation of the Known Worlds Zombie Event Scale. This classification system was invented to measure and quantify the effect of necromancy on the common peoples. It was also helpful when dealing with the backlash against the Necromancer community.
A number of criteria and indicators are defined to assure coherent reporting of zombie events by different official authorities. There are seven nonzero levels on the KWZES scale: three incident-levels and four Apocalypse-levels. There is also a level 0.
Undead rise up in enormous numbers relative to population density, all who die become zombies
Undead rise up without direct control, creating new undead without the aid of any living necromancer, and spread destruction and death over an area no less than fifty square miles
|5||Apocalypse with Wider Consequences||
Undead rise up without direct control, creating new undead without the aid of any living necromancer, and spread destruction and death over an area of no less than one city-size.
|4||Apocalypse with Local Consequences||
Undead rise up without direct command
Undead take action without control that results in property damage as well as harm to the living. This incldes personal injury and serious destruction of property.
|2||Incident||Undead take action without control that results in damage to property.||Examples|
|1||Anomaly||Undead acting without control
|0||Deviation||No safety significance.
Note that in all cases an event requires that an undead take action without the control of a living necromancer. This includes such times as undead are controlled by undead necromancers(still a common issue in the early parts of the Golden Age. If a living necromancer is involved it is no longer considered a "zombie event" and would instead be covered by applicable local laws.