The Crossverse is the intersection between all universes within the Obeidon multiverse.
The Crossverse can be used to enter other known or completely unknown universes. Unwary travellers can become easily lost in the Crossverse- it is of immense volume, far larger than any universe. Attempting to open a gateway is also difficult, and only possible to achieve by advanced civilisations. Rifts form at certain points known as Rift Potential Regions, and Rifts forming from a single RPR nearly always lead to the same location.
Dimensional Rifts enable limited but almost instantaneous travel through this region. The Iridi and Deraia are two of the many races who temporarily move into the Crossverse in their spaceships to allow FTL travel, travelling from one RPR to another closer to their destination.
The Crossverse is home to an extremely dangerous race of plasma-based lifeforms known as the Julth. The Julth perceive all outsiders as invaders and will attack any travellers that enter their home.