Virtual Space is 3 dimensionnal directions.
Directions X, Y and Z are orthogonals, and projected to the 2D space screen.
Virtual Space can be a terrain above we walk and apply some fog, effects, shadows, etc.
Virtual Space can be splited to a 2D grid of clones as basic defined objects.
Virtual Space can be lighted by directionnal light (exterior) or others.
Physic simulations can brign special nature artefacts and more...
