Receiver

The Receiver is a location connected to the Soul Repository and the area which souls are sent to so a Darwinian can be reborn as a new Darwinian. From here the soul is sent across Darwinia, the most ending up at the Biosphere.

Details
The location has the almost all variants of the Virus by the time the Player comes across it including an island filled with Ants and Ant Hills, as well as two Soul Destroyers which must be dealt with. In fact the only variant missing is the Red Darwinians.

Pre-Darwinia
When the virus was released onto the Darwinians world, one of the first locations to be taken over is this area. For the Darwinians that was a critical point as this is one of the most major areas of their lifecycle. The receiver was turned off - souls continued to be sent here, the virus therefore had an unlimited source of souls.

Darwinia
The player first is introduced to this area when Dr. Sepulveda talks about the life circle of the virus and how it has impacted them.

The player has to conquer this area and the Pattern Buffer to move onto the Biosphere.

Multiwinia
Since Souls are still being broadcast around the world in Multiwinia, the Receiver is presumably still functioning, though due to the fighting its state of control is unknown.

However, it does not matter which Tribe controls the receiver as unlike other locations, souls are merely passing through the location elsewhere. Thus the colour of the Multiwinians in control of this area would have no impact on the birth of the Multiwinians elsewhere.