The World of Arborne Genre

Multiversal Catalogue Classification
Arcaynia Gray D(4) H(es/sfb) S(p) E(~m) C{w/+ Lu ? ? ? MP(2, m, f)

Flat Worlds, Gray is the Universe name, Has four dimensions, is in an evolving state and has semi-finite boundaries, is pocket universe sized, has unevenly distributed medium level entropy, cosmology is turned towards the material with positive flow of time, a universal down pull (to replace gravity, which is the attraction of matter towards large bodies of matter) and (as of yet indeterminate) forces determining the placement and shape of the pillar worlds and their chemical makeup, multiversal porosity is just above low with pores/gates being drawn to matter and distributed in a fractal pattern, just as the pillars are.
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The universe has a set ceiling boundary. The universe is growing downward. Entropy is stronger the farther down one goes from this ceiling. Pillars (or worlds/planets in our mundane universe) closest to the lower boundary are highly affected by the entropic forces and are basically unlivable.