NPC Invasion is a seasonal global event. It was released under the name Zombie Invasion for Halloween in 2016.
It also has the distinction of being the game's first self-managing global event, which was made possible with the Event Engine.
Furthermore, NPC Invasion is one of few Event Engine events that does not have a default Event Mode. It can be thought of as an umbrella term for the different global spawn modes.
Event Modes Edit
|Zombie Invasion||Every 5-25 minutes, a horde of Zombies spawns on a random map. Players are notified of the NPC's locations via hints.|
|Easter Egg Hunt||Every 1-8 seconds, an Easter Bunny spawns on a random map. Players are not notified of the NPC's locations.|