Hyperspace is space with more than three spatial dimensions, as some of you who have taken the final hours of calculus and/or linear algebra are familiar with. As far as we know, it only exists within software, and if you are disciplined enough then also your mind. Understanding hyperspace broadens our capacity for thinking. I won't get into explaining it, as many of these resources are broken records for it. Below are introductions of various 4D softwares available right now and links to them, which are key examples for some necessary components in our conscious evolution.
I would like to make one suggestion to future game developers. The fourth dimension can be shown in a 3D setting with transparent overlays and color shifts. This would be optimal in an RPG setting.