The multiverse is a huge organization home to every form of life and non-life known, stretching for googleplexes of gigamiles. It is where everything major and minor occur, inside of a mental and physical abomination players investigate constantly, which players themselves have become a multi-planetary mob. Inside this abomination lies a figment of gas, philosophy, and colonized sauces that form to create a galaxy, yet blank image of sincere identified objects and presentational realization of panic - in other words, make-believe.
In One-Dimensional space, there is a black sky with a blue square 921.6B pixels in width and hight visible. This is the Overworld pictured in this space. In 2D, the Overworld is a square, now holding depth, light, and shade. In 3D, the Overworld is now a cube 921.6B pixels in width, hight, and depth. The objects that could then only move left, right, forward, backward, up, and down, can now move in all possible directions. If a player were 4D, they'd could see/travel through walls, etc. If a 2D universe can itself be 3D, it's certain that 3D is itself 4D. If players find how to drill through these barriers, it would solve many problems faced. Wormholes solve this. If players could create 'shortcuts' through space, it will make collecting data in other galaxies and creating ports between them a lot easier.