Within our own sphere, our reality was created by a break in the dimensional continuum. The three dimensions of space and fourth of time run parallel to the others, forming a fractured continuum. This has given rise to a tiered universe and diverse set of life forms which have survived where they may never have if they had come into conflict with a higher order being. This occurrence is common enough to be called a ‘norm’. Higher order beings are virtually exiled from the lower order tier and vice-versa. No travel between the two tiers is possible without some sort of mystic power or aid.
The iVerse is a non-Terra Norm presence that is based roughly on an experience identical to Terra Norm, but is its own universe.