Harvester Orbs are giant purple anomalies that float around the map of Urzikstan in the Zombies mode of Call of Duty: Modern Warfare 3. These flying orbs can be beneficial to players who are low on money, but they will have to work for it.
How to Find Harvester Orbs in MW3 Zombies
Harvester Orbs can be found at various points of the map, but can be random depending on the game. Showing up in a specific spot one game will not necessarily mean it will be in the next game. They are also not listed on the overworld map, but will appear in the map when players get near one.