G2U4

GU4 is a training base for millions of soldiers, assassins and mercenaries. Exams for multiversal mercenary positions are held here, and those who pass are sent to GU1 for further training.

Much like GU1 and a lot of the worlds in the early parts of the G branch,the world has been stripped of anything useful. Nature has pushed back, however, and has taken over old buildings in places. It's still a rather barren world, but it has the ability to regrow.