Earth

After the Humans were defeated in the Porphyrion galaxy there was an initial demand for all remaining Humans to be executed for their crimes, however this was dismissed and a Re-writing of Mankind was put forth instead.

The Re-writing meant a complete reset of mankind to a primitive age. It was a difficult job considering the state of the galaxy in the aftermath of the war and also had massive impact on the lives of the Earth-based Humans. The Re-writing has a series of stages.

 Stage One: Genetic Modification 

During this stage all Humans within the Porphyrion galaxy at that time were rounded up and then heavily augmented back to a completely primitive state of mind. The Cavemen.

 Stage Two: Reset 

The stage considered the most unethical to say the least. This involved the population of Earth to be destroyed. For this to happen the course of a massive asteroid was redirected and crashed into the Earth in the Gulf of Mexico. To cover the traces that the event happened recently, should mankind develop scientifically once more, teams modified the event to make it appear to have happened 65 million years prior. Remains of Porphyrion creatures were shipped to the planet and put in place to resemble organisms that had been wiped out in this phenomena rather than the Human race.

Also during this stage all technological advancements of Earth were removed.

 Stage Three: Terraform 

Using Earth's tectonic plates the Earth was altered drastically to give rise to a number of different regions and climates. Islands were sunk, constructed and moved to cater for the remaining Humans.

 Stage Four: Repopulate 

The augmented Humans were distributed all over the Earth then left to become "something" once more.