Earth Prime is an unacessible world created by Billybobjoe47s that several characters (Brennan K. Theler and Keiron Morrison) hail from.
Earth Prime is a normal Earth, nearly like Reality in all respects except one: That it is inextricably connected with its own Dimensional Local Group, the cornerstone of such.
When a catastrophe allowed all the local dimensions to interact, Earth Prime soon became the center of diplomacy-- and conflict. To this day, they are still engaged in a multi-front war.
Earth Prime is located in an alternate Dimensional Group, and as such can only be reached by a Level 2 Dimensional Gateway, ocurrences of which are extremely rare.
As such, it is currently impossible to access Earth Prime in any way.