Designed to control the red droids that extract metal. It is a shelter for (60*[nexus level])^1.25 droids. Only droids hiding in the Nexus, cannot be destroyed during the attack.

During the attack of Nuclear missile a part of droids are killed by the radiation.

+ 10 * level to the power of 1.4
+ 45 * level * 1.155 to the power of level